About: http://webisa.webdatacommons.org/272803837

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	They are also a commercial by-product of the wine industry, which is one of the only sources of them for products such as baking soda and Rochelle salt.
http://www.w3.org/ns/prov#wasQuotedFrom	majestic.co.uk