Question: What was the name of the manager of both Billy J. Kramer and an English rock  band formed in Liverpool in 1960?
Sentence (from "The Beatles"): In 1963 their enormous popularity first emerged as "Beatlemania", and as the group's music grew in sophistication in subsequent years, led by primary songwriters Lennon and McCartney, they came to be perceived as an embodiment of the ideals shared by the counterculture of the 1960s.
Relevant evidence: No