<prompt> Translate the following text to EnglishWalijaribu kuwa na akili sana na hiyo ilikuwa uharibifu wao. Poirot puffed katika sigareti yake ndogo, macho yake fasta juu ya dari.  <response>: They tried to be too clever and that was their undoing. Poirot puffed at his tiny cigarette, his eyes fixed on the ceiling. 