<http://webisa.webdatacommons.org/prov/7341272> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/339671409> . <http://webisa.webdatacommons.org/339671409> <http://www.w3.org/ns/prov#value> "Up till now I have avoided the social networks principally because i do not quite understand how they work, but now I have a page and some friends but I do not know whether they know I exist as I have had contact with only a couple of them." . <http://webisa.webdatacommons.org/prov/443272786> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/339671409> . <http://webisa.webdatacommons.org/339671409> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/339671409> <http://www.w3.org/ns/prov#wasQuotedFrom> <blogspot.com> .