<prompt> Translate the following text to SwahiliWe must find out, he said quietly, and Tuppence felt that if she was Mr. Brown she would not like the tone of those simple words.  <response>: Ni lazima tujue, alisema kwa utulivu, na Tuppence alihisi kwamba kama yeye alikuwa Bw. Brown, hangeipenda sauti ya maneno hayo sahili. 