About: http://webisa.webdatacommons.org/426252459

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	There???s a red plant pigment found in lot of fruits and veg, including grapes, that changes color based on PH. http://chemistry.about.com/od/acidsbase1/a/red-cabbage-ph-indicator.htm
http://www.w3.org/ns/prov#wasQuotedFrom	boingboing.net