About: http://webisa.webdatacommons.org/51658267

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	When used on board a ship which is subjected to a continuous oscillatory motion due to sea action, the output is an angle which varies with time.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk