About: http://webisa.webdatacommons.org/248439372

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 is called material because many nouns in this class are the materials that other items are made out from, such as cloth, metal, wheat, etc., although there are some exceptions, such as rain or soap.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com