About: http://webisa.webdatacommons.org/312267201

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	Other nutrients, including vitamin D, vitamin K and magnesium, require calcium's presence in order to be absorbed properly.
http://www.w3.org/ns/prov#wasQuotedFrom	sfgate.com