About: http://webisa.webdatacommons.org/230147676

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	Their relationship was conducted mostly by letters and shared love of mathematical problems.
http://www.w3.org/ns/prov#wasQuotedFrom	princeton.edu