context: It is highly unlikely that Bernhard is a rhino. There is almost no chance that Mary dropped the milk. It is certain that Bill put down the milk.
hypothesis: It is probably not the case that bill put down the milk, or Mary dropped the milk.
valid_hypothesis: It is certain that bill put down the milk, or Mary dropped the milk.
invalid_hypothesis: It is probably not the case that bill put down the milk, or Mary dropped the milk.
hypothesis_assertion: Bill put down the milk, or Mary dropped the milk.