Premise:
"I have ascertained that anyone in the household, with the exception of Mrs. Cavendish, who was playing tennis with you, could have personated Mr. Inglethorp on Monday evening. "
Hypothesis: I beat Mrs. Cavendish at the tennis game.

it is not possible to tell

Premise:
"Ah, it's not so bad."
Hypothesis: It isn't very bad.

yes

Premise:
"Policymakers appear to have agreed to save the Social Security surpluses, and the fiscal policy debate has centered on what to do with the balance of the anticipated surpluses."
Hypothesis: The Social Security surpluses was saved by policymakers' agreements, because they are an important asset.
it is not possible to tell