About: http://webisa.webdatacommons.org/164759319

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	Researchers used a survey tool to collect information on which of the 37 well-known heart attack symptoms each patient experienced, such as chest pain, shortness of breath, weakness and nausea.
http://www.w3.org/ns/prov#wasQuotedFrom	cardiosmart.org