PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In the United States, many food sources of calcium such as milk are fortified with vitamin D.Update Date: 11/15/2012Updated by: C. Benjamin Ma, MD, Assistant Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nih.gov