About: http://webisa.webdatacommons.org/308375396

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	If the leading character is a pipe symbol, open starts up a new command and open a write-only filehandle leading into that command.
http://www.w3.org/ns/prov#wasQuotedFrom	cpan.org