*Here's your quick overview of what has been happening around Wikidata over the last week.* Welcome to the 400th Weekly Summary!

Here are some interesting Wikidata facts or queries collected by the community and related to the number 400:

- Item #400 is Jenna Jameson https://www.wikidata.org/wiki/Q400; Property #400 is platform https://www.wikidata.org/wiki/Property:P400 (software), and Lexeme #400 is "*vierhonderd* https://www.wikidata.org/wiki/Lexeme:L400" - Dutch for "four hundred". The QID for the natural number 400 is Q1535396 https://www.wikidata.org/wiki/Q1535396. The QID for the year 400 is Q25621 https://www.wikidata.org/wiki/Q25621. - The page ID 400 https://www.wikidata.org/w/index.php?curid=400 is Ludwig van Beethoven https://www.wikidata.org/wiki/Q255; the Wikidata page version ID 400 was a version of https://www.wikidata.org/w/index.php?oldid=400 printer https://www.wikidata.org/wiki/Q82. - The Greek philosopher Hypatia https://www.wikidata.org/wiki/Q11903, one of the first women scientists, became head of the Neo-Platonist school at Alexandria, in 400 AD. We include her here in tribute to those working to reduce Wikidata's gender gap. - Wikimedia Commons has 627 images https://commons.wikimedia.org/wiki/Category:Taken_with_Canon_PowerShot_A400 taken with the Canon PowerShot A400 https://www.wikidata.org/wiki/Q20889009 - you can see one on baritone saxophone https://www.wikidata.org/wiki/Q808218. - Map of things at an altitude of 400 m https://w.wiki/Fsk. - Map of places with a population of 400 ± 5 (yellow) graduating to 400 ± 0 (red) https://w.wiki/Fyu. - From this query https://w.wiki/Fsi, Wikidata knows of 21 theatres https://www.wikidata.org/wiki/Q24354, 15 cinemas https://www.wikidata.org/wiki/Q41253, 11 sports venues https://www.wikidata.org/wiki/Q1076486, 11 event venues https://www.wikidata.org/wiki/Q18674739, and 9 ships https://www.wikidata.org/wiki/Q11446 having a maximum capacity https://www.wikidata.org/wiki/Property:P1083 of 400. - Image grid https://w.wiki/Fsr of taxa https://www.wikidata.org/wiki/Q16521 with a highest observed lifespan https://www.wikidata.org/wiki/Property:P4214 of at least 400 years. - Image grid https://w.wiki/Fsy of items with a mass https://www.wikidata.org/wiki/Property:P2067 of 400 kilograms https://www.wikidata.org/wiki/Q11570 and image grid https://w.wiki/Fsx of items with a mass https://www.wikidata.org/wiki/Property:P2067 of 400 grams https://www.wikidata.org/wiki/Q41803. - List of 400m distance sports events https://w.wiki/GE5. - 400 Ducrosa https://www.wikidata.org/wiki/Q152455 is a main-belt asteroid named after J. Ducros https://www.wikidata.org/wiki/Q76401873. - List of items with an external ID equal to 400 https://w.wiki/GD$. - Last but not least, 400 dahlias https://w.wiki/GDo for Léa, Lydia and the other contributors to this list!

Events https://www.wikidata.org/wiki/Special:MyLanguage/Wikidata:Events

- Past: Wikidata office hour on Telegram, January 22nd. Notes of the meeting https://www.wikidata.org/wiki/Wikidata:Events/IRC_office_hour_2020-01-22 - Upcoming: WikiTuesday / Wikidata Talks Meetup https://discuss-space.wmflabs.org/t/vikisali-istanbul-bulusmalari-28-ocak-wikituesday-istanbul-meetup-january-28/3022 in Istambul, Turkey, January 28th - Upcoming: online meeting dedicated to organizers of Wikidata's 8th birthday https://www.wikidata.org/wiki/Wikidata:Eighth_Birthday, January 29th

Tool of the week

- Duplicate Item https://www.wikidata.org/wiki/User:Magnus_Manske/duplicate_item.js copies the current item (without descriptions or sitelinks) to a new item. This tool is useful for splitting items and for making sets of similar items. Recommended for experienced users.

Other Noteworthy Stuff

- New development roadmap for Wikidata and Wikibase for 2020 https://www.wikidata.org/wiki/Wikidata:Development_plan - OpenRefine usage survey 2020 https://docs.google.com/forms/d/e/1FAIpQLSd-Z00h433Y0pIutYyeW98C0Yss6p7RFisVIkkM8uxUtEpmRw/viewform - Wikidata has an entry https://datasetsearch.research.google.com/search?query=Wikidata in Google's new data search tool https://datasetsearch.research.google.com/

Did you know?

- Newest properties https://www.wikidata.org/wiki/Special:ListProperties: - General datatypes: attested as https://www.wikidata.org/wiki/Property:P7855, category for files created with program https://www.wikidata.org/wiki/Property:P7861, period of lactation https://www.wikidata.org/wiki/Property:P7862, aperture https://www.wikidata.org/wiki/Property:P7863 - External identifiers: C64.COM ID https://www.wikidata.org/wiki/Property:P7852, c64games.de ID https://www.wikidata.org/wiki/Property:P7853, eu-football.info team ID https://www.wikidata.org/wiki/Property:P7854, museum in Salzburg (AT) ID https://www.wikidata.org/wiki/Property:P7856, fyyd podcast episode ID https://www.wikidata.org/wiki/Property:P7857, Upper Austria Museum ID https://www.wikidata.org/wiki/Property:P7858, WorldCat Identities ID https://www.wikidata.org/wiki/Property:P7859, word in DEJ of RAE ID https://www.wikidata.org/wiki/Property:P7860, HAL article ID https://www.wikidata.org/wiki/Property:P7864 - New property proposals https://www.wikidata.org/wiki/Special:MyLanguage/Wikidata:Property_proposal to review: - General datatypes: LiverTox Likelihood Score https://www.wikidata.org/wiki/Wikidata:Property_proposal/LiverTox_Likelihood_Score, dean https://www.wikidata.org/wiki/Wikidata:Property_proposal/dean, stated age in source https://www.wikidata.org/wiki/Wikidata:Property_proposal/stated_age_in_source, US Bureau of Prisons Register Number https://www.wikidata.org/wiki/Wikidata:Property_proposal/US_Bureau_of_Prisons_Register_Number, located in the constituency https://www.wikidata.org/wiki/Wikidata:Property_proposal/located_in_the_constituency, motherboard https://www.wikidata.org/wiki/Wikidata:Property_proposal/motherboard, WMF short URL https://www.wikidata.org/wiki/Wikidata:Property_proposal/WMF_short_URL, Recognition, recognized by, not recognized by, jurisdiction status https://www.wikidata.org/wiki/Wikidata:Property_proposal/Recognition,_recognized_by,_not_recognized_by,_jurisdiction_status, supported metadata https://www.wikidata.org/wiki/Wikidata:Property_proposal/supported_metadata, expansion https://www.wikidata.org/wiki/Wikidata:Property_proposal/expansion, historic first https://www.wikidata.org/wiki/Wikidata:Property_proposal/historic_first, number of pins, number of pin positions https://www.wikidata.org/wiki/Wikidata:Property_proposal/number_of_pins,_number_of_pin_positions, catalogue raisonné https://www.wikidata.org/wiki/Wikidata:Property_proposal/catalogue_raisonn%C3%A9, Dose https://www.wikidata.org/wiki/Wikidata:Property_proposal/Dose, value group number https://www.wikidata.org/wiki/Wikidata:Property_proposal/value_group_number, external georeferencer URL https://www.wikidata.org/wiki/Wikidata:Property_proposal/external_georeferencer_URL, axis https://www.wikidata.org/wiki/Wikidata:Property_proposal/axis, Voting system https://www.wikidata.org/wiki/Wikidata:Property_proposal/Voting_system, image revision-id https://www.wikidata.org/wiki/Wikidata:Property_proposal/image_revision-id, region within image https://www.wikidata.org/wiki/Wikidata:Property_proposal/region_within_image, georeferencing data https://www.wikidata.org/wiki/Wikidata:Property_proposal/georeferencing_data, based on tabular data https://www.wikidata.org/wiki/Wikidata:Property_proposal/based_on_tabular_data, Number of active electronic terminals https://www.wikidata.org/wiki/Wikidata:Property_proposal/Number_of_active_electronic_terminals, associated with https://www.wikidata.org/wiki/Wikidata:Property_proposal/associated_with, translated title https://www.wikidata.org/wiki/Wikidata:Property_proposal/translated_title, position in sequence https://www.wikidata.org/wiki/Wikidata:Property_proposal/position_in_sequence, Attribution text https://www.wikidata.org/wiki/Wikidata:Property_proposal/Attribution_text, food energy https://www.wikidata.org/wiki/Wikidata:Property_proposal/food_energy, madhhab https://www.wikidata.org/wiki/Wikidata:Property_proposal/madhhab, Maximum number of playable characters https://www.wikidata.org/wiki/Wikidata:Property_proposal/Maximum_number_of_playable_characters, Main deity https://www.wikidata.org/wiki/Wikidata:Property_proposal/Main_deity, electron configuration https://www.wikidata.org/wiki/Wikidata:Property_proposal/electron_configuration, capital social https://www.wikidata.org/wiki/Wikidata:Property_proposal/capital_social, gained territory from https://www.wikidata.org/wiki/Wikidata:Property_proposal/gained_territory_from, key col of https://www.wikidata.org/wiki/Wikidata:Property_proposal/key_col_of, religion or world view https://www.wikidata.org/wiki/Wikidata:Property_proposal/religion_or_world_view, CMF identifier https://www.wikidata.org/wiki/Wikidata:Property_proposal/CMF_identifier, masculine form https://www.wikidata.org/wiki/Wikidata:Property_proposal/masculine_form, feminine form https://www.wikidata.org/wiki/Wikidata:Property_proposal/feminine_form, menu items https://www.wikidata.org/wiki/Wikidata:Property_proposal/menu_items, food composition https://www.wikidata.org/wiki/Wikidata:Property_proposal/food_composition, IP address or range https://www.wikidata.org/wiki/Wikidata:Property_proposal/IP_address_or_range, featured in https://www.wikidata.org/wiki/Wikidata:Property_proposal/featured_in, lighting https://www.wikidata.org/wiki/Wikidata:Property_proposal/lighting, general law https://www.wikidata.org/wiki/Wikidata:Property_proposal/general_law, territorial entity ranking context https://www.wikidata.org/wiki/Wikidata:Property_proposal/territorial_entity_ranking_context, references https://www.wikidata.org/wiki/Wikidata:Property_proposal/references, mentions named entity https://www.wikidata.org/wiki/Wikidata:Property_proposal/mentions_named_entity, hardiness https://www.wikidata.org/wiki/Wikidata:Property_proposal/hardiness - External identifiers: NASA active astronaut ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/NASA_active_astronaut_ID, VGMRips company ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/VGMRips_company_ID, DSSTOX compound identifier https://www.wikidata.org/wiki/Wikidata:Property_proposal/DSSTOX_compound_identifier, Roglo person ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/Roglo_person_ID, VGMRips system ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/VGMRips_system_ID, Museu de Memes ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/Museu_de_Memes_ID, Nobel API ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/Nobel_API_ID, VideoGamer.com game ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/VideoGamer.com_game_ID, Canmore object-type ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/Canmore_object-type_ID, Canmore maritime-type ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/Canmore_maritime-type_ID, GameRevolution game ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/GameRevolution_game_ID, TrueAchievements game ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/TrueAchievements_game_ID, PARADISEC Catalog https://www.wikidata.org/wiki/Wikidata:Property_proposal/PARADISEC_Catalog, ELAR ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/ELAR_ID, ChemSynthesis ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/ChemSynthesis_ID, Whaling History ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/Whaling_History_ID, ft.dk politician identifier https://www.wikidata.org/wiki/Wikidata:Property_proposal/ft.dk_politician_identifier, Ciência ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/Ci%C3%AAncia_ID, 7digital United Kingdom artist ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/7digital_United_Kingdom_artist_ID, Ident.Nr. https://www.wikidata.org/wiki/Wikidata:Property_proposal/Ident.Nr., GoodRx https://www.wikidata.org/wiki/Wikidata:Property_proposal/GoodRx, part number https://www.wikidata.org/wiki/Wikidata:Property_proposal/part_number, Faculté des sciences de Nancy ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/Facult%C3%A9_des_sciences_de_Nancy_ID, MIC https://www.wikidata.org/wiki/Wikidata:Property_proposal/MIC, UEFA referee ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/UEFA_referee_ID, name-suggestion-index identifier https://www.wikidata.org/wiki/Wikidata:Property_proposal/name-suggestion-index_identifier, TrueAchievements series ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/TrueAchievements_series_ID, Bollywood Hungama ID 2 https://www.wikidata.org/wiki/Wikidata:Property_proposal/Bollywood_Hungama_ID_2, Gamekult game ID https://www.wikidata.org/wiki/Wikidata:Property_proposal/Gamekult_game_ID - Query examples: - The results of the Australian Triple J Hottest 100, 2019 https://www.wikidata.org/wiki/Q83572751 music voting poll were published on 25 January 2019. See the results with associated music videos to watch https://w.wiki/G7b. - Map of destinations from Wuhan Tianhe International Airport https://w.wiki/GDz - 50 philosophers for which DBpedia and Wikidata state different date of birth https://w.wiki/GE3 (source https://twitter.com/kvistgaard/status/1221806637809270785)

Development

- More work on wb_terms migration - Units support for quantity datatype (phab:T239474 https://phabricator.wikimedia.org/T239474) - Fix the link to rawgraphs.io from WDQS (phab:T222257 https://phabricator.wikimedia.org/T222257) - More work on showing messages related to permissions on the Wikidata Bridge - Tainted references: fix minor alignment issues (phab:T243269 https://phabricator.wikimedia.org/T243269, phab:T242212 https://phabricator.wikimedia.org/T242212) - Add a "remove warning" button to confirm a correct reference ( phab:T234789 https://phabricator.wikimedia.org/T234789) - Preparing the ground for a unified component library for the Wikidata UI

You can see all open tickets related to Wikidata here https://phabricator.wikimedia.org/maniphest/query/4RotIcw5oINo/#R. If you want to help, you can also have a look at the tasks needing a volunteer https://phabricator.wikimedia.org/project/board/71/query/zfiRgTnZF7zu/?filter=zfiRgTnZF7zu&order=priority.

Monthly Tasks

- Add labels, in your own language(s), for the new properties listed above. - Comment on property proposals: all open proposals https://www.wikidata.org/wiki/Wikidata:Property_proposal/Overview - Suggested and open tasks https://www.wikidata.org/wiki/Wikidata:Contribute/Suggested_and_open_tasks ! - Contribute to a Showcase item https://www.wikidata.org/wiki/Special:MyLanguage/Wikidata:Showcase_items . - Help translate https://www.wikidata.org/wiki/Special:LanguageStats or proofread the interface and documentation pages, in your own language! - Help merge identical items https://www.wikidata.org/wiki/User:Pasleim/projectmerge across Wikimedia projects. - Help write the next summary! https://www.wikidata.org/wiki/Wikidata:Status_updates/Next