Premise & hypothesis.
A man working on a large piece of equipment.

The man is working.
++++++++++
true or not.
yes

Premise & hypothesis.
A man working diligently while sitting at a table.

A man works on his thesis.
++++++++++
true or not.
it is not possible to tell

Premise & hypothesis.
A man in a yellow car has his hand to his forehead.

A man is playing Dance Dance Revolution.
++++++++++
true or not.
no