Hello, We are conducting a survey to better understand the ontology issues within Wikidata and their impact on data reuse. You may recall that in 2021 and 2022 we run the Data Quality Days, which generated a lot of very useful discussions on the processes around increasing/maintaining data quality and utility on Wikidata. We identified various types of ontology issues, and we would like to get input on which of these are the most problematic for you in your use of Wikidata's data. This survey has two sections and will take 20-25 minutes to complete. Optional open-ended questions may lengthen the completion time. In the first section, we will present descriptions of the ontology issues we have found. We will ask you to evaluate the impact of these issues on your work, and you are also invited to share any other ontology issues you have detected in case we missed them. The second section focuses on how you use data from Wikidata. Most of the questions in this section are optional, meaning you do not have to share details of your work unless you find them relevant to the issues you would like to share with us. They are helpful to us in understanding the context of your issues better, however. This survey is anonymous, but there is an optional email field at the end for follow-up questions. Providing an email will make your responses not completely anonymous. A summary of the results of the survey will be published as a whole at Wikidata:Ontology issues prioritization <https://www.wikidata.org/wiki/Wikidata:Ontology_issues_prioritization> and will not include any identifying information. If you would like to participate, please use this link (LamaPoll): https://wikimedia.sslsurvey.de/ontology-issues/ We kindly request your participation by Friday, February 17th at 23:59 UTC. If you have any questions, please do not hesitate to let us know by replying directly to this message or leaving a note at Wikidata talk:Ontology issues prioritization <https://www.wikidata.org/wiki/Wikidata_talk:Ontology_issues_prioritization> . Many thanks in advance for your participation. -- Mohammed Sadat *Community Communications Manager, Wikidata* Wikimedia Deutschland e. V. | Tempelhofer Ufer 23-24 | 10963 Berlin Phone: +49 (0) 30 577 116 2466 https://wikimedia.de Grab a spot in my calendar for a chat: calendly.com/masssly. Keep up to date! Current news and exciting stories about Wikimedia, Wikipedia and Free Knowledge in our newsletter (in German): Subscribe now <https://www.wikimedia.de/newsletter/>. Imagine a world in which every single human being can freely share in the sum of all knowledge. Help us to achieve our vision! https://spenden.wikimedia.de Wikimedia Deutschland – Gesellschaft zur Förderung Freien Wissens e. V. Eingetragen im Vereinsregister des Amtsgerichts Berlin-Charlottenburg unter der Nummer 23855 B. Als gemeinnützig anerkannt durch das Finanzamt für Körperschaften I Berlin, Steuernummer 27/029/42207.