<http://webisa.webdatacommons.org/167334844>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/167334844>	<http://www.w3.org/ns/prov#value>	"Reciprocating machines, and in particular reciprocating motor and pump mechanisms, utilize a valving apparatus for controlling the stroke and the reversing mechanisms to permit the reciprocating action to occur." .
<http://webisa.webdatacommons.org/prov/223035093>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/167334844> .
<http://webisa.webdatacommons.org/167334844>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.es> .