About: http://webisa.webdatacommons.org/277331611

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	A normal everyday wave has a crest and a trough, while a tsunami is a solitary wave or soliton, all crest with no corresponding trough.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com