Search engine support for RDF/OWL extensions?

I read here:

https://schema.org/docs/kickoff-workshop/sw1109_Vocabulary.pdf

that search engines don't support RDF/OWL based extensions (using
subClassOf / subPropertyOf / equivalentClass to extend schema.org). Is that
likely to change in the future?

Received on Saturday, 23 June 2018 23:26:44 UTC