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 "John Surtees"): John Surtees, {'1': ", '2': ", '3': ", '4': "} (11 February 1934 – 10 March 2017) was an English Grand Prix motorcycle road racer and Formula One driver.
Relevant evidence: No