<http://webisa.webdatacommons.org/prov/392419498> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/387965230> . <http://webisa.webdatacommons.org/387965230> <http://www.w3.org/ns/prov#wasQuotedFrom> <blogspot.co.uk> . <http://webisa.webdatacommons.org/387965230> <http://www.w3.org/ns/prov#value> "Gurwitz explains how cycle research predict price movements in gold, silver and other markets." . <http://webisa.webdatacommons.org/387965230> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> .