Dear Ms., I thank you for your answer. Wikidata is organized in RDF Format. However, what Mr. Bob DuCharme has just said is that there is a lack of organization of the information provided by Wikidata. In fact, several Wikidata items and statements are missing or not absolutely accurate. Yours Sincerely, Houcemeddine Turki (he/him) Medical Student, Faculty of Medicine of Sfax, University of Sfax, Tunisia Undergraduate Researcher, UR12SP36 GLAM and Education Coordinator, Wikimedia TN User Group Member, WikiResearch Tunisia Member, Wiki Project Med Member, WikiIndaba Steering Committee Member, Wikimedia and Library User Group Steering Committee Co-Founder, WikiLingua Maghreb Founder, TunSci ____________________ +21629499418 -------- Message d'origine -------- De : Marijane White &lt;whimar(a)ohsu.edu&gt; Date : 2019/08/10 18:18 (GMT+01:00) À : Discussion list for the Wikidata project &lt;wikidata(a)lists.wikimedia.org&gt; Objet : Re: [Wikidata] Ontology in XML Perhaps someone can correct me if I am wrong, but I am under the impression that such a thing doesn’t exist and that Wikidata’s models are intentionally not documented as an ontology. I gathered this understanding from Bob DuCharme’s blog post about extracting RDF models from Wikidata with SPARQL queries: http://www.bobdc.com/blog/extracting-rdf-data-models-fro/ Marijane White, M.S.L.I.S. Data Librarian, Assistant Professor Oregon Health & Science University Library Phone: 503.494.3484 Email: whimar@ohsu.edu<mailto:whimar@ohsu.edu> ORCiD: https://orcid.org/0000-0001-5059-4132 From: Wikidata &lt;wikidata-bounces(a)lists.wikimedia.org&gt; on behalf of Manzoor Ali &lt;manzoorali29(a)gmail.com&gt; Reply-To: Discussion list for the Wikidata project &lt;wikidata(a)lists.wikimedia.org&gt; Date: Saturday, August 10, 2019 at 2:38 AM To: &quot;wikidata(a)lists.wikimedia.org&quot; &lt;wikidata(a)lists.wikimedia.org&gt; Subject: [Wikidata] Ontology in XML Hello Wikidata, Sorry in advance if I am using wrong mail. I need Wikidata ontology in XML form. can you please tell me that from which link I can download it. Thanks in advance.