About: http://webisa.webdatacommons.org/338476772

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 totally different from what you started with, in which x was a 3 by 1 matrix.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com