About: http://webisa.webdatacommons.org/259936540

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	I would also recommend providing '+' to make a tag required and '-' to prohibit one, including the ability to use multiple plusses and multiple minuses.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com