context: A white-haired conductor is standing in front of an orchestra which is also standing, instruments in hand.
hypothesis: It is impossible that the conductor and orchestra are not sitting because the crowd is cheering.
valid_hypothesis: Chances are about even that the conductor and orchestra are not sitting because the crowd is cheering.
invalid_hypothesis: It is impossible that the conductor and orchestra are not sitting because the crowd is cheering.
hypothesis_assertion: The conductor and orchestra are not sitting because the crowd is cheering.