About: http://webisa.webdatacommons.org/155444379

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 spacing elements 50, 54 may be made from silicon or other suitable material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com