[{"role": "user", "content": "I'm planning a trip to Italy and I'd love to communicate with the locals, but I'm not sure how to say 'Who did this?' in Italian. Can you help me with that?"}, {"role": "assistant", "content": "The translation of 'Who did this?' in Italian is 'Chi ha fatto questa?' If you want to ask in a more general sense, like 'Who did this?' without specifying what 'this' is, you can simply say 'Chi ha fatto questo?' or even 'Chi \u00e8 stato?' But if you want to be more specific and point to something, 'Chi ha fatto questa?' is the best option."}]