About: http://webisa.webdatacommons.org/171722298

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	The following operators (among others) are defined, where r is a rectangle and n is a number:
http://www.w3.org/ns/prov#wasQuotedFrom	c2.com