With the presence of Mr. Inglethorp, a sense of constraint and veiled hostility seemed to settle down upon the company. 
Mr. Inglethorp did not seem aware his presence caused so much discomfort.
mnli hypothesis: Mr. Inglethorp did not seem aware his presence caused so much discomfort. premise: With the presence of Mr. Inglethorp, a sense of constraint and veiled hostility seemed to settle down upon the company. 