About: http://webisa.webdatacommons.org/75491780

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	Thank you Allen, your answer clarifies things, especially for me, a non-expert in topology.
http://www.w3.org/ns/prov#wasQuotedFrom	mathoverflow.net