About: http://webisa.webdatacommons.org/191982995

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	For the 1/2 circle, that would be a straight line (that is a 180 degree angle)
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com