About: http://webisa.webdatacommons.org/23556852

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	Its core is a relation, whose proof is preserved in my personal notes and included here but was not sent, so far as I can see, with the letter.
http://www.w3.org/ns/prov#wasQuotedFrom	ias.edu