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<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> .