About: http://webisa.webdatacommons.org/332843565

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	Me and the book disagree on whether these sentences are positive or negatve assertions, but I assume it is me that is mistaken somehow.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com