Premise & hypothesis.
Man with no shirt on wearing shorts and hiking boots standing with hand on his head looking out onto a mountain.

A man is standing and gazing at the sunset behind a mountain.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A Twins baseball pitcher is about to throw a ball from the pitching mound while an umpire and second baseman look on in the background.

The people are all on the baseball diamond.
++++++++++
true or not.
yes

Premise & hypothesis.
A brown dog runs through the water in the ocean.

A labrador is fetching a frisbee in the water.
++++++++++
true or not.
it is not possible to tell