About: http://webisa.webdatacommons.org/187766427

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	Also shown in FIG. 4 is a pair of optional vent holes 116 for venting entrapped gas from the spring chamber 68???.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com