Premise: John Winston Ono Lennon , ( born John Winston Lennon ; 9 October 19408 December 1980 ) was an English guitarist , singer , and songwriter who co-founded the Beatles , the most commercially successful and musically influential band in the history of popular music . The Beatles . With members John Lennon , Paul McCartney , George Harrison and Ringo Starr , they became widely regarded as the foremost and most influential act of the rock era .
Hypothesis: One of the Beatles's co-founders was lead vocalist John Lennon.
Label: ENTAILMENT