About: http://webisa.webdatacommons.org/116145892

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	It isn???t difficult just because we???ve never observed it, but rather because being material is a necessary condition of being grass.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com