Premise:
"It seemed to her, as she did so, that the tension of Mrs. Vandemeyer's attitude relaxed."
Hypothesis: As she did so, it appeared the tension of Mrs. Vandemeyer's attitude became worse to the point her guest excused herself and left the room.

no

Premise:
"literature"
Hypothesis: Books and written work.

yes

Premise:
"On the upper floors are the royal collections of furniture, ceramics, and carved ivories."
Hypothesis: You must go to the bottom floor if you want to see royal collections of furniture, ceramics, and carved ivories.
no