[{"role": "user", "content": "I'm trying to write a story with some dialogue in Italian and I'm having trouble translating a specific line, could you help me figure out how to say 'You know who she is' in Italian?"}, {"role": "assistant", "content": "The translation of 'You know who she is' in Italian is 'Lei sa chi \u00e8'. This sentence is in the formal form, if you want to use the informal form you can say 'Tu sai chi \u00e8'."}]