About: http://webisa.webdatacommons.org/81546040

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	Alternatives are to create different tables for different types of entities, or to have a table with a column for every possible key and set the value to NULL for entities that do not have that key.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com