<http://webisa.webdatacommons.org/prov/311561455>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/122792146> .
<http://webisa.webdatacommons.org/prov/310691763>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/122792146> .
<http://webisa.webdatacommons.org/122792146>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/122792146>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<digitalmars.com> .
<http://webisa.webdatacommons.org/122792146>	<http://www.w3.org/ns/prov#value>	" AFAICS you have a Source i.e. a file and a Sink i.e. a socket." .