About: http://webisa.webdatacommons.org/156407380

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	Symptoms such as chest pain or tightness, palpitations, shortness of breath, or unusual fatigue may indicate a serious problem.
http://www.w3.org/ns/prov#wasQuotedFrom	epa.gov