Premise:
"His stomach rumbled."
Hypothesis: His stomach was silent.

no

Premise:
"But neither Clinton nor Birch mentioned gay marriage."
Hypothesis: Gay marriage was not mentioned by Clinton or Birch and people were very annoyed.

it is not possible to tell

Premise:
"my husband it's not a job that i enjoy at all"
Hypothesis: I don't like a job.
yes