About: http://webisa.webdatacommons.org/196830377

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	perlink matrix a really sparse matrix, i.e a matrix with mostly zero entries.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com