[{"role": "user", "content": "I'm planning a trip to Italy and I want to ask locals about the construction of a building. Can you help me translate 'Who built this?' into Italian?."}, {"role": "assistant", "content": "The translation of 'Who built this?' in Italian is 'Chi ha costruito questo?' If you want to sound more polite, you can say 'Scusa, chi ha costruito questo?' which means 'Excuse me, who built this?'"}]