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<http://webisa.webdatacommons.org/97641994>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<archpatent.com> .
<http://webisa.webdatacommons.org/prov/158959487>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/97641994> .
<http://webisa.webdatacommons.org/97641994>	<http://www.w3.org/ns/prov#value>	"A system comprising a pulley having a first pulley wheel and a second pulley wheel, the pulley including means acting between the two pulley wheels such that:" .