About: http://webisa.webdatacommons.org/198519013

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	Calcium is an essential nutrient which means the body cannot produce it on its own, so it must be absorbed through food and/or supplements, although practically no one gets enough calcium from food (see the sources below).
http://www.w3.org/ns/prov#wasQuotedFrom	heandsheeatclean.com