My friend, besought Poirot, "I implore you, do not enrage yourself! 
"My friend", said Poirot, "I would be very angry about this, if I were you."
mnli hypothesis: "My friend", said Poirot, "I would be very angry about this, if I were you." premise: My friend, besought Poirot, "I implore you, do not enrage yourself! 