About: http://webisa.webdatacommons.org/406632338

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	This is a little imprecise, because sets can contain anything, such as other sets, and symbols such as Heart, Elephant, and Galaxy - and I do not mean the string representation of those things, but those actual things.
http://www.w3.org/ns/prov#wasQuotedFrom	mathoverflow.net