Premise: Creedence Clearwater Revival . The band consisted of lead vocalist , lead guitarist , and primary songwriter John Fogerty , his brother rhythm guitarist Tom Fogerty , bassist Stu Cook and drummer Doug Clifford . John Fogerty . He was the lead singer , lead guitarist and principal songwriter of the band Creedence Clearwater Revival ( CCR ) and has since had a successful solo career .
Hypothesis: Creedence Clearwater Revival did not have John Fogerty as lead vocalist and guitarist.
Label: CONTRADICTION