About: http://webisa.webdatacommons.org/272483942

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	That is how we do mathematics =) but still your guess was a good one.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com