[{"role": "user", "content": "I'm trying to learn some basic phrases in Italian for my trip to Italy and I'm stuck on the sentence 'This is Tom's.' Can you help me translate it?"}, {"role": "assistant", "content": "Certo, I'd be happy to help you with that. The translation of 'This is Tom's.' in Italian is 'Questo \u00e8 di Tom.'"}, {"role": "user", "content": "Grazie mille! That's really helpful. Can you explain the grammar behind it?"}, {"role": "assistant", "content": "In Italian, when you want to express possession, you use the phrase '\u00e8 di' + the owner's name, instead of using an apostrophe like in English. So, 'Questo \u00e8 di Tom' literally means 'This is of Tom'."}, {"role": "user", "content": "That makes sense. What if I want to say 'This is Tom's book.'?"}, {"role": "assistant", "content": "In that case, you would say 'Questo \u00e8 il libro di Tom.' Here, you're using the phrase '\u00e8 di' again, but this time you're also using the word 'libro' to specify that it's a book."}]