Question: Beat the Boots II is a box set by Frank Zappa, the set contains material from between 1968 and 1978, including "Swiss Cheese/Fire!", it documents a famous 1971 concert at a casino in Montreux where the venue burned down, inspiring the lyrics of which song by the English rock band Deep Purple? 
Sentence (from "Shades 1968–1998"): It spans their career from 1968 to 1998.
Relevant evidence: No