About: http://webisa.webdatacommons.org/359315340

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	In a 4 cycle, 4 cylinder chambers, rotary-reciprocal engine there is a spark plug for every other cylinder and, they fire simultaneously every 90 degrees of rotation.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com