<http://webisa.webdatacommons.org/51209646>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<base-search.net> .
<http://webisa.webdatacommons.org/prov/41967638>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/51209646> .
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<http://webisa.webdatacommons.org/51209646>	<http://www.w3.org/ns/prov#value>	"Their advantages compared to other technologies are direct,..." .