[{"role": "user", "content": "I'm trying to describe a situation to an Italian friend, but I'm not sure how to translate it. Can you help me say 'I saw him do it' in Italian?"}, {"role": "assistant", "content": "The translation of 'I saw him do it' in Italian is 'L'ho visto farla.' You can use this phrase to describe the situation to your friend."}]