About: http://webisa.webdatacommons.org/45412459

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	Of course, in particular cases there will be other, more useful, categories which are equivalent to $\mathbf{C}^\mathrm{op}$.
http://www.w3.org/ns/prov#wasQuotedFrom	mathoverflow.net