About: http://webisa.webdatacommons.org/221758960

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	You could regard symbols as a sort of constants, but that do not contain an actual value.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com