context: A man wearing a white shirt is playing the drums.
hypothesis: It is impossible that a man is playing the trumpet with his hands tied behind his back.
valid_hypothesis: It is impossible that a man is playing the trumpet with his hands tied behind his back.
invalid_hypothesis: It is probably the case that a man is playing the trumpet with his hands tied behind his back.
hypothesis_assertion: A man is playing the trumpet with his hands tied behind his back.