context: There is almost no chance that Mary is in the bedroom. We believe that Fred went to the hallway. It is probable that John dropped the apple. We believe that if either Fred went to the hallway, or John dropped the apple, then Emily is a cat. Chances are slight that if Mary is in the bedroom, or John dropped the apple, then Bernhard is a swan. There is little chance that if John dropped the apple, and Fred went to the hallway, then Jeff discarded the milk.
hypothesis: It is probably the case that bernhard is a swan, and Emily is a cat.
valid_hypothesis: There is almost no chance that bernhard is a swan, and Emily is a cat.
invalid_hypothesis: It is probably the case that bernhard is a swan, and Emily is a cat.
hypothesis_assertion: Bernhard is a swan, and Emily is a cat.