About: http://webisa.webdatacommons.org/419771049

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	@egreg well, if Tex checks every variable declared in a math environment, or any abbreviation (which is a mostly a word not found in the dictionary), this seems to be possible.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com