About: http://webisa.webdatacommons.org/222161598

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	Obstructions An 'obstruction' is anything artificial, including the artificial surfaces and sides of roads and paths and manufactured ice, except:a.
http://www.w3.org/ns/prov#wasQuotedFrom	ruleshistory.com