context: It is highly likely that Greg is a swan. We doubt that Jeff went to the garden. It is highly unlikely that Brian is yellow. There is a better than even chance that if either Greg is a swan, or Brian is yellow, then Lily is a frog. Chances are slight that if either Jeff went to the garden, or Brian is yellow, then Julius is a rhino. There is a better than even chance that if either Jeff went to the garden, or Greg is a swan, then Mary got the football.
hypothesis: There is a better than even chance that either Brian is yellow, or Julius is a rhino.
valid_hypothesis: It is highly unlikely that either Brian is yellow, or Julius is a rhino.
invalid_hypothesis: There is a better than even chance that either Brian is yellow, or Julius is a rhino.
hypothesis_assertion: Either Brian is yellow, or Julius is a rhino.