About: http://webisa.webdatacommons.org/242389940

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	One of the tell-tale signs they used to look for [from] high above was a dark shape underwater, which could often be a shark or whale or other creature, but occasionally they would get lucky and find a submarine near to the surface.
http://www.w3.org/ns/prov#wasQuotedFrom	world-mysteries.com