About: http://webisa.webdatacommons.org/38451983

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 polar coordinate is expressed by two kinds of angles (??, ??) wherein ?? has a scale of 0???-50??? and ?? has a scale of 0???-360???.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com