About: http://webisa.webdatacommons.org/186042274

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	Before describing the operation and method of use of the subject coupling 25, brief reference is made to the chemical extraction apparatus or system (FIG. 1) in which this coupling is especially suited for use.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr