He is, of course, a German by birth, said Poirot thoughtfully, "though he has practiced so long in this country that nobody thinks of him as anything but an Englishman. 
Poirot said that he had taken on the behaviors of someone from England.
mnli hypothesis: Poirot said that he had taken on the behaviors of someone from England. premise: He is, of course, a German by birth, said Poirot thoughtfully, "though he has practiced so long in this country that nobody thinks of him as anything but an Englishman. 