About: http://webisa.webdatacommons.org/80377135

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	If you add all the numerators and all the denominators in a set of equal fractions, the result is a fraction equal to those in the original set.
http://www.w3.org/ns/prov#wasQuotedFrom	nctm.org