About: http://webisa.webdatacommons.org/426650178

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	The principal dietary source of calcium is milk and milk products although lesser sources include salmon, almonds, and leafy green vegetables such as spinach, kale, and turnip greens.
http://www.w3.org/ns/prov#wasQuotedFrom	vitamindwiki.com