About: http://webisa.webdatacommons.org/13804884

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	Ships needed to have a certain depth in the water called Draft in order to be stable.When the ships came to town to load up with wood and other cargo they had these large stones in the hold to give them the proper buoyancy.
http://www.w3.org/ns/prov#wasQuotedFrom	triplicate.com