[[{"role": "user", "content": "I'm trying to learn Italian and I stumbled upon the sentence 'Tom couldn't swim.' Can you help me translate it into Italian so I can better understand how to express inability to do something in the language?"}, {"role": "assistant", "content": "The translation of 'Tom couldn't swim' into Italian is 'Tom non sapeva nuotare.' This sentence expresses inability to do something in the past, indicating that Tom did not know how to swim at a specific point in time."}]]