About: http://webisa.webdatacommons.org/188221316

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	Doctors routinely prescribe calcium channel blockers such as verapamil (Calan, Isoptin) to prevent heart attack.
http://www.w3.org/ns/prov#wasQuotedFrom	naturalpedia.com