About: http://webisa.webdatacommons.org/264361062

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	But, people over 50 have trouble getting enough of some vitamins and minerals through diet alone, including calcium and vitamin D (see Postmenopausal Health Concerns).
http://www.w3.org/ns/prov#wasQuotedFrom	nih.gov