This is a reminder / retroactive breaking change announcement for the Wikidata Query Service and Wikibase RDF model.
The change was already announced, and we invite you to review that announcement if you haven’t seen it before; but that email was quite a while ago, and we also didn’t send it to all of the usual channels, so we wanted to send this email to ensure everyone is aware of the change.
The most important part: queries that tested for blank nodes using the standard isBlank() SPARQL function must now use wikibase:isSomeValue() instead.
Best regards,—Mike Pham (he/him)Sr Product Manager, Search
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