PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • When it comes to a search engine attempting to distinguish between when an image is an advertisement or a non-advertisment, alt text can be helpful, but I think search engineers are right in wanting to look at as many signals as they can when making that distinction.
http://www.w3.org/ns/prov#wasQuotedFrom
  • seobythesea.com