About: http://webisa.webdatacommons.org/202467392

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	Graham, who introduced the world to such stars as Janis Joplin, Jefferson Airplane and the Grateful Dead, was killed Oct. 25, 1991, when his helicopter crashed into an electrical tower after a concert at the Concord Pavilion.
http://www.w3.org/ns/prov#wasQuotedFrom	variety.com