About: http://webisa.webdatacommons.org/376397300

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	The underlying problem was a typo: $ = ~/.../ rather than $ =~ /.../ and there was a bit of discussion about why that returns the complement of 0.
http://www.w3.org/ns/prov#wasQuotedFrom	perl.org