context: We doubt that John moved to the garden. There is a very good chance that Bill left the milk. It is highly unlikely that Julius is a frog. There is almost no chance that if either John moved to the garden, or Julius is a frog, then Bernhard is gray. It is highly likely that if Bill left the milk, or Julius is a frog, then Brian is white. It is improbable that if either John moved to the garden, or Bill left the milk, then Mary went to the park.
hypothesis: Chances are slight that brian is white, or Julius is a frog.
valid_hypothesis: We believe that brian is white, or Julius is a frog.
invalid_hypothesis: Chances are slight that brian is white, or Julius is a frog.
hypothesis_assertion: Brian is white, or Julius is a frog.