About: http://webisa.webdatacommons.org/405384500

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 term ???head??? is used to designate the head of one of screws 6 a, b, and c as including their respective washer 8 a, b and c.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com