<http://webisa.webdatacommons.org/339310706> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/prov/421017537> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/339310706> . <http://webisa.webdatacommons.org/prov/117850729> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/339310706> . <http://webisa.webdatacommons.org/prov/320349790> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/339310706> . <http://webisa.webdatacommons.org/prov/182654405> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/339310706> . <http://webisa.webdatacommons.org/339310706> <http://www.w3.org/ns/prov#value> "First, manufacture of the double-diamond-frame safety bicycle required the development of advanced metalworking techniques to produce the frames, and components such as ball bearings, washers and sprockets." . <http://webisa.webdatacommons.org/339310706> <http://www.w3.org/ns/prov#wasQuotedFrom> <fixedreference.org> .