About: http://webisa.webdatacommons.org/298407841

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	Heart attacks usually cause symptoms such as severe chest pain, nausea, shortness of breath, or a feeling of impending doom.
http://www.w3.org/ns/prov#wasQuotedFrom	annals.org