About: http://webisa.webdatacommons.org/435512081

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	Of course, the matrices used are not limited to two kinds, but three or more kinds of matrices may be applied repeatedly.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com