context: It is almost certain that Bill went to the kitchen. It is highly likely that John put down the milk. Chances are slight that Bernhard is a swan. It is probably not the case that if Bernhard is a swan, or Bill went to the kitchen, then Julius is yellow. There is almost no chance that if either Bernhard is a swan, or John put down the milk, then Brian is a lion. There is a very good chance that if either Bill went to the kitchen, or John put down the milk, then Mary moved to the garden.
hypothesis: There is little chance that john put down the milk, or Julius is yellow.
valid_hypothesis: It is highly likely that john put down the milk, or Julius is yellow.
invalid_hypothesis: There is little chance that john put down the milk, or Julius is yellow.
hypothesis_assertion: John put down the milk, or Julius is yellow.