context: A man wearing a top-hat, blue plaid pajama pants, a white shirt, and gold embroidered vest stands in front of an American Flag under a colorfully painted street-front, and speaks to a crowd from a microphone.
hypothesis: It is impossible that a man is singing the national anthem
valid_hypothesis: It is impossible that a man is singing the national anthem
invalid_hypothesis: It is probable that a man is singing the national anthem
hypothesis_assertion: A man is singing the national anthem