context: A male hiker wearing a brown hat is standing next to a triangular monument on the top of a mountain.
hypothesis: It is almost certain that a man hides his bald spot under a hat.
valid_hypothesis: It is highly unlikely that a man hides his bald spot under a hat.
invalid_hypothesis: It is almost certain that a man hides his bald spot under a hat.
hypothesis_assertion: A man hides his bald spot under a hat.