About: http://webisa.webdatacommons.org/216334284

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	They could detect it easily no matter how they look, provided they know some science such as physics, chemistry, rock formations mechanisms,??? etc.
http://www.w3.org/ns/prov#wasQuotedFrom	uncommondescent.com