About: http://webisa.webdatacommons.org/55637727

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 first spacer 190 is made of a nonmagnetic material, such as plastics.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com