About: http://webisa.webdatacommons.org/66011094

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	here v is the column vector {v1(x),v2(x),v3(x),v4(x)} and A is a 4 x 4 matrix.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com