About: http://webisa.webdatacommons.org/339202843

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	Vitamin D is a fat-soluble vitamin that is primarily acquired through local production in the skin after ultraviolet light exposure but can also be obtained through natural and supplemental dietary sources.
http://www.w3.org/ns/prov#wasQuotedFrom	clinicaltrials.gov