About: http://webisa.webdatacommons.org/71551531

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	I suppose you write your own power function, which checks to see if the exponent is an integer and uses multiplication explicitly; that would take care of your A's at least.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com