Question: Who is the Italian teammate of the four-time 500cc motorcycle World Champion who won the title in 1956, 1958, 1959, and 1960
Sentence (from "Remo Venturi"): His best years were in 1959 and 1960 when he finished second in the 500cc world championship to his MV Agusta teammate, John Surtees.
Relevant evidence: No