About: http://webisa.webdatacommons.org/5553998

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	(or other types of documents) while recording what I write and what I say.
http://www.w3.org/ns/prov#wasQuotedFrom	mathforum.org