Question: Download Festival is a British rock festival, held annually at Donington Park in Leicestershire, England, since 2003, it's the  most popular British summer rock and heavy metal festival and has hosted some of the genres' biggest names, including which rock band formed in England in 1978 by David Coverdale, after his departure from his previous band Deep Purple?  
Sentence (from "Download Festival"): The 2015 festival featured massive technological surveillance by police in conjunction with festival organizers Live Nation UK.
Relevant evidence: No