Premise & hypothesis.
A man in a black shirt is singing with a microphone.

A person is singing.
++++++++++
true or not.
yes

Premise & hypothesis.
A man in a white and blue vertically striped dress shirt with black hair stands in a room next to other people looking forward.

a man is standing
++++++++++
true or not.
yes

Premise & hypothesis.
A person wearing a blue shirt and white hat works on a manhole cover.

A construction worker repairs a manhole cover.
++++++++++
true or not.
it is not possible to tell