About: http://webisa.webdatacommons.org/124007227

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	Participants, or their proxies if the participant was younger than 16 years, were asked if they had taken any vitamins, minerals, or other dietary supplements in the past 30 days.
http://www.w3.org/ns/prov#wasQuotedFrom	jamanetwork.com