About: http://webisa.webdatacommons.org/252237621

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 pump doesn???t know anything about head, head is a concept we use to make our life easier.
http://www.w3.org/ns/prov#wasQuotedFrom	pumpfundamentals.com