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<http://webisa.webdatacommons.org/449795079>	<http://www.w3.org/ns/prov#value>	"Twitter is a free social networking and micro-blogging service that enables its users to send and read other users' updates known as tweets." .
<http://webisa.webdatacommons.org/449795079>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<blackberryos.com> .
<http://webisa.webdatacommons.org/prov/435011587>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/449795079> .