[{"role": "user", "content": "I'm trying to communicate with an Italian friend about a situation, and I want to express that someone was at fault - how would I translate 'He made a mistake' into Italian?"}, {"role": "assistant", "content": "The translation of 'He made a mistake' in Italian is 'Lui ha fatto un errore.' This should help you convey that someone was at fault in the situation you're discussing with your friend."}]