About: http://webisa.webdatacommons.org/225630114

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 have taken a semester's worth of Discrete mathematics: this book, which covers some set theory (which from some reading I guess a set is a category, and a morphism is a mapping function).
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com