About: http://webisa.webdatacommons.org/398498743

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	A screw or other structure may be used to vary a friction exerted by the brake.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com