About: http://webisa.webdatacommons.org/180308749

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	These types of bottom elements have been used for the vessel types shown in FIGS. 2 and 3.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com