About: http://webisa.webdatacommons.org/447911693

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	And if performance is an issue, why not convert to ints to do the subtraction?
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com