premise: Carlos Santana formed Santana in the sixties.
hypothesis: Carlos Santana ( born July 20 , 1947 ) is a Mexican and American musician who first became famous in the late 1960s and early 1970s with his band , Santana , which pioneered a fusion of rock and Latin American music . Santana is an American Latin rock band formed in San Francisco , California in 1966 by Mexican-American guitarist Carlos Santana .