Question: Bottom Line is an album by British bluesman John Mayall, an English blues singer, guitarist, organist and songwriter, whose musical career spans over how many years?
Sentence (from "John Mayall"): They include Eric Clapton, Peter Green, Jack Bruce, John McVie, Mick Fleetwood, Mick Taylor, Don "Sugarcane" Harris, Harvey Mandel, Larry Taylor, Aynsley Dunbar, Hughie Flint, Jon Hiseman, Dick Heckstall-Smith, Andy Fraser, Johnny Almond, Walter Trout, Coco Montoya and Buddy Whittington.
Relevant evidence: No