Premise:
"The big colt was nervous, tending to dance sideways, tossing his head high."
Hypothesis: The colt was not nervous at all.

no

Premise:
"yeah uh i thank you very much you're ever up this way look me up here at TI in Attleboro"
Hypothesis: Thank you for coming here to visit me.

it is not possible to tell

Premise:
"There's even a small museum on the premises."
Hypothesis: The museum on the premises is not large.
yes