About: http://webisa.webdatacommons.org/11667476

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	If you have trouble getting enough calcium in your diet, you may need to take a calcium supplement such as calcium carbonate, calcium phosphate, or calcium citrate.
http://www.w3.org/ns/prov#wasQuotedFrom	nih.gov