About: http://webisa.webdatacommons.org/115206570

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	But then, when we move to signed numbers, we should logically use a two- places place holder such as "s,pn where s stands for + or - and pn stands for a plain number.
http://www.w3.org/ns/prov#wasQuotedFrom	mathforum.org