context: A man and a woman wearing costume glasses (with attached eyebrows, nose, and moustache) and holding cigars.
hypothesis: It is certain that the people are blowing smoke out of their mouths.
valid_hypothesis: It is impossible that the people are blowing smoke out of their mouths.
invalid_hypothesis: It is certain that the people are blowing smoke out of their mouths.
hypothesis_assertion: The people are blowing smoke out of their mouths.