[[{"role": "user", "content": "I'm studying Italian for an upcoming phone etiquette course and I want to make sure I understand the proper phrases. Can you help me translate 'Who called them?' into Italian?"}, {"role": "assistant", "content": "The correct translation of 'Who called them?' in Italian is 'Chi ha chiamato loro?' However another possible translation is 'Chi li ha chiamati?' or 'Chi ha chiamato loro?' and also 'Chi li ha chiamato?' and the most formal one is 'Chi li ha chiamati?'"}]]