About: http://webisa.webdatacommons.org/19161466

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	For instance, I consider numbers and sets a prerequisite for both groups and discrete math because working with sets is essential in both subjects, and because numbers and sets are a good place to learn to prove things.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com