About: http://webisa.webdatacommons.org/361713362

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	There were actually a total of five arms built and delivered to NASA including ones used on the Challenger, Discovery, Atlantis and Endeavour space shuttles.
http://www.w3.org/ns/prov#wasQuotedFrom	travelpod.com