About: http://webisa.webdatacommons.org/300843138

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	I guess the biggest problem to variables is they maybe local and hence go out of scope which would lose the grammar.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com