Premise:
"Well, good-bye, and good luck to you both." He shook hands with them, and in another minute they were descending the steps of 27 Carshalton Terrace with their heads in a whirl."
Hypothesis: He wished them good luck.

yes

Premise:
"Permit me. "
Hypothesis: I've already been permitted.

no

Premise:
"And there are other possibilities. "
Hypothesis: There was only the one answer.
no