About: http://webisa.webdatacommons.org/186854626

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	How is Mathematica supposed to know that x is a vector in your example - OK
http://www.w3.org/ns/prov#wasQuotedFrom	wolfram.com