Premise & hypothesis.
Three men in orange construction vests are working in a building.

Construction workers are working.
++++++++++
true or not.
yes

Premise & hypothesis.
A woman stands in a field of flowers.

A woman is smiling.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
People sitting down and waiting at a subway or train terminal.

People are running around in an open field.
++++++++++
true or not.
no