About: http://webisa.webdatacommons.org/213715323

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	Actually, I am mostly interested in the case when $X$ is regular and connnected (see the update).
http://www.w3.org/ns/prov#wasQuotedFrom	mathoverflow.net