About: http://webisa.webdatacommons.org/196779384

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	polygon_usage.cpp Using the library provided polygon data types and functions
http://www.w3.org/ns/prov#wasQuotedFrom	boost.org