context: It is likely that John went to the garden. It is probable that Greg is yellow. Chances are slight that Julius is white. It is probably the case that if either Julius is white, or John went to the garden, then Emily is a wolf. Chances are about even that if Greg is yellow, or John went to the garden, then Fred is in the park. We believe that if John went to the garden, or Greg is yellow, then Mary got the milk.
hypothesis: It is impossible that emily is a wolf, or Julius is white.
valid_hypothesis: Chances are about even that emily is a wolf, or Julius is white.
invalid_hypothesis: It is impossible that emily is a wolf, or Julius is white.
hypothesis_assertion: Emily is a wolf, or Julius is white.