About: http://webisa.webdatacommons.org/167109906

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 object of the invention is to vary the opening and closing of the engine valves with an actuation system that is low cost, operationally versatile and free of problems such as excessive noise and wear.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com