Premise: Or does he make an exception when the witness is himself?

Hypothesis: He always takes responsibility, and has yet to except himself, even as a witness.
Answer: no

Premise: "A star," she said sadly.

Hypothesis: She was sad that she couldn't ever become a star.
Answer: it is not possible to tell

Premise: Truly a strange and sinister gathering!

Hypothesis: A gathering that is evil.
Answer: yes

Premise: The last I heard of you was that your friends were in grave anxiety on your behalf.

Hypothesis: I heard your friends were really happy for you.
Answer: no