Premise & hypothesis.
three people over a culvert looking into the water beside an alligator caution sign

There are three people swimming in the water
++++++++++
true or not.
no

Premise & hypothesis.
A marching band is performing on a sunny day.

An empty bucket.
++++++++++
true or not.
no

Premise & hypothesis.
A black and white dog is sliding down a sandy hill.

A small dog is at the park.
++++++++++
true or not.
it is not possible to tell