What is Mario Puzo's most famous book?
The Godfather.  Originally published in 1969, is a novel about a fictional crime family in New York.
<START_INST>What is Mario Puzo's most famous book?<END_INST><START_CTX><END_CTX><START_A>The Godfather.  Originally published in 1969, is a novel about a fictional crime family in New York.<END_A>