<http://webisa.webdatacommons.org/291450429>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<biomedcentral.com> .
<http://webisa.webdatacommons.org/prov/230530818>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/291450429> .
<http://webisa.webdatacommons.org/prov/222553781>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/291450429> .
<http://webisa.webdatacommons.org/291450429>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/291450429>	<http://www.w3.org/ns/prov#value>	"Most SNSs also facilitate public and private messaging, photo, video and other content" .