[{"role": "user", "content": "I'm writing a letter to an Italian friend and I want to express my disagreement with someone's opinion, could you please help me translate the sentence 'Tom is dead wrong' into Italian?"}, {"role": "assistant", "content": "The translation of 'Tom is dead wrong' in Italian is 'Tom si sbaglia di grosso.' This phrase effectively conveys strong disagreement with Tom's opinion."}]