A class-level diagram depicting the core biomedical knowledge network in Wikidata. Every box represents one entity type, which is noted in the box header with the number of Wikidata items of that class. The attributes listed in the box are Wikidata properties (and property counts) for each entity type. Properties that link to other Wikidata items are depicted as edges in the graph. The core entity types that were loaded by our team are shown in orange. Data for human genetic variants and biological pathways are being loaded by other research groups, but in coordination with our team and using our Python library (purple boxes). A team from NIOSH has loaded data on chemical hazards and environmental exposures, and a separate team of researchers is loading bibliographic data for the scientific literature (green boxes).