<prompt> Translate the following text to EnglishAkamshika Poirot mkono na kumshikilia kwa sauti ya chini, akisema, Niambie, Mheshimiwa Poirot, si strychnine, sivyo?  <response>: He clutched Poirot by the arm, and sank his voice to a whisper: Just tell me this, Mr. Poirot, it isnt, it isnt strychnine, is it? I hardly heard what Poirot replied. 