context: A man dressed in bright colored clothing is sitting on a chair on the sidewalk playing an instrument for cash.
hypothesis: There is almost no chance that the man is singing on the street corner for money.
valid_hypothesis: Chances are about even that the man is singing on the street corner for money.
invalid_hypothesis: There is almost no chance that the man is singing on the street corner for money.
hypothesis_assertion: The man is singing on the street corner for money.