Additionally, and probably mostly as it's where they are taking there name from, truthy statements are statements with the best rank <https://www.wikidata.org/wiki/Wikidata:Glossary#Rank> on a given property: for instance, the Earth (Q2 <https://www.wikidata.org/wiki/Q2>) has 3 shapes (P1419 <https://www.wikidata.org/wiki/Property:P1419>) statements - oblate spheroid (Q3241540), geoid (Q185969), and ball (Q838611) - but while 2 (oblate spheroid, and ball) have a "normal" rank, 1 (geoid) was given a "preferred" rank. Thus, when considering truthy statments, the only value for Earth shape is geoid. Hope that helps :) Bests, Maxime Lathuilière Le 03/12/2017 à 07:54, Fariz Darari a écrit :

Am 03.12.2017 um 14:49 schrieb Imre Samu: You will simply get two truthy results: Russian rubel, and Soviet rubel. Both are Russian currencies. If you want to know when, why, where, etc, you have to check the qualified "full" statements. That's why it's called "truthy": the answer is kind of true, depending on context. -- Daniel Kinzler Principal Platform Engineer Wikimedia Deutschland Gesellschaft zur Förderung Freien Wissens e.V.

Am 03.12.2017 um 15:06 schrieb Fariz Darari: Ah, right - the current answer would by convention be marked as preferred, so only it counts as "truthy". Sorry for the confusion. -- Daniel Kinzler Principal Platform Engineer Wikimedia Deutschland Gesellschaft zur Förderung Freien Wissens e.V.

In the RDF dump, used by the query service, totally. See https://www.mediawiki.org/wiki/Wikibase/Indexing/RDF_Dump_Format . In the json dump, all these is encoded by a "mainsnak" attribute and a "qualifiers" one : https://www.mediawiki.org/wiki/Wikibase/DataModel/JSON 2017-12-03 15:34 GMT+01:00 Laura Morales &lt;lauretas(a)mail.com&gt;om>:

statement is ranked « preferred », present in a typical query result or in an infobox extraction. Thank you :) one more question: As a human: how can I check - for example Russia - "Truthy=simple" statements? Is there any website? The https://www.wikidata.org/wiki/Q159 links show all statements, I want to see only the "Truthy=simple" statements. What is the best practice - for debugging? Thanks in advance, Imre 2017-12-03 15:10 GMT+01:00 Thomas Douillard &lt;thomas.douillard(a)gmail.com&gt;om>: > statement is ranked « preferred », typically the one valid at present time, > then it will be the only one present in a typical query result or in an > infobox extraction. > > 2017-12-03 14:49 GMT+01:00 Imre Samu &lt;pella.samu(a)gmail.com&gt;om>: > >> >All=contains not only the Truthy ones, but also the ones with qualifiers >> >> imho: Sometimes Qualifiers is very important for multiple values ( >> like "Start time","End time","point in time", ... ) >> for example: Russia https://www.wikidata.org/wiki/Q159 : Russia - >> P38:"currency" >> has 2 "statements" both with qualifiers: >> >> * Russian ruble - ( start time: 1992 ) >> * Soviet ruble - (end time: September 1993 ) >> >> My Question: >> in this case - what is the "Truthy=simple" result for >> Russia-P38:"currency" ? >> >> >> Regards, >> Imre >> >> >> >> 2017-12-03 7:54 GMT+01:00 Fariz Darari &lt;fadirra(a)gmail.com&gt;om>: >> >>> Truthy=simple, direct, only Subject-Predicate-Object structure >>> >>> For example: wd:Q76127 wdt:P26 wd:Q468519 (= Sukarno hasSpouse Fatmawati) >>> >>> All=contains not only the Truthy ones, but also the ones with qualifiers >>> (= how long was the marriage? when did the marriage happen?), references >>> (sources to support the claim), and preferences (in case of multiple >>> values, one might be preferred -- think of multiple birth dates of some >>> people). >>> >>> -fariz >>> >>> Regards, >>> Fariz >>> >>> On Sun, Dec 3, 2017 at 1:49 PM, Laura Morales &lt;lauretas(a)mail.com&gt; wrote: >>> >>>> Can somebody please explain (in simple terms) what's the difference >>>> between "all" and "truthy" RDF dumps? I've read the explanation available >>>> on the wiki [1] but I still don't get it. >>>> If I'm just a user of the data, because I want to retrieve information >>>> about a particular item and link items with other graphs... what am I >>>> missing/leaving-out by using "truthy" instead of "all"? >>>> A practical example would be appreciated since it will clarify things, >>>> I suppose. >>>> >>>> [1] https://www.wikidata.org/wiki/Wikidata:Database_download#RDF_dumps >>>> >>>> _______________________________________________ >>>> Wikidata mailing list >>>> Wikidata(a)lists.wikimedia.org >>>> https://lists.wikimedia.org/mailman/listinfo/wikidata >>>> >>> >>> >>> _______________________________________________ >>> Wikidata mailing list >>> Wikidata(a)lists.wikimedia.org >>> https://lists.wikimedia.org/mailman/listinfo/wikidata >>> >>> >> >> _______________________________________________ >> Wikidata mailing list >> Wikidata(a)lists.wikimedia.org >> https://lists.wikimedia.org/mailman/listinfo/wikidata >> >> > > _______________________________________________ > Wikidata mailing list > Wikidata(a)lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wikidata > >