About: http://webisa.webdatacommons.org/421451818

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	to use Perl for text-mangling - so we can use the XML::Simple module. here is an example of a little script to parse your XML:
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com