About: http://webisa.webdatacommons.org/10662556

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 am not sure if what he is asking you to sign is doing anything other than making you aware of that rule.
http://www.w3.org/ns/prov#wasQuotedFrom	metafilter.com