About: http://webisa.webdatacommons.org/162437973

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	See http://stackoverflow.com/questions/1498042/should-a-perl-constructor-return-an-undef-or-a-invalid-object/2860066#2860066 for more reasons why exceptions are a good idea.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com