About: http://webisa.webdatacommons.org/115479305

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	As some others have pointed out, there are such things as fences, security checkpoints, locked doors, metal detectors, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	volokh.com