Premise:
"The boats carrying the banana crops also fostered the beginnings of the tourist trade."
Hypothesis: Jamaica has never allowed tourists to enter the country by boat.

no

Premise:
"It's the one that comes to mind when I think about how smart I was before I actually had to deal first hand with an omnibus rate case."
Hypothesis: Fortunately I've never had to deal first hand with an omnibus rate case.

no

Premise:
"Yours, Polly"
Hypothesis: Sincerely, Polly
yes