About: http://webisa.webdatacommons.org/176358744

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	or, if a is an expression of more than one term or operators, it is always contained in parentheses itself (a + b)(c+ d) or other variations.
http://www.w3.org/ns/prov#wasQuotedFrom	askamathematician.com