About: http://webisa.webdatacommons.org/127063671

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	Although this concept is a simple one, there are significant difficulties in implementing it in a practical context, especially when providing coupling for two coaxial drives.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com