About: http://webisa.webdatacommons.org/199955656

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	You are missing one variable to determine volume, e.g. velocity, or mean velocity or something like that.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com