context: Chances are slight that Mary moved to the garden. It is improbable that Julius is a frog. It is highly likely that Bernhard is a swan. It is impossible that if Bernhard is a swan, or Julius is a frog, then Greg is yellow. It is improbable that if Bernhard is a swan, or Mary moved to the garden, then Brian is a lion. It is probable that if either Mary moved to the garden, or Bernhard is a swan, then John went to the hallway.
hypothesis: We doubt that bernhard is a swan, or Greg is yellow.
valid_hypothesis: It is highly likely that bernhard is a swan, or Greg is yellow.
invalid_hypothesis: We doubt that bernhard is a swan, or Greg is yellow.
hypothesis_assertion: Bernhard is a swan, or Greg is yellow.