context: A waitress is serving customers at a restaurant.
hypothesis: Chances are about even that the customers are impressed by the hard work of the waitress.
valid_hypothesis: Chances are about even that the customers are impressed by the hard work of the waitress.
invalid_hypothesis: It is almost certain that the customers are impressed by the hard work of the waitress.
hypothesis_assertion: The customers are impressed by the hard work of the waitress.