context: Chances are slight that Greg is a swan. It is probably the case that Julius is a rhino. It is highly likely that Daniel dropped the milk. It is unlikely that if Greg is a swan, and Daniel dropped the milk, then Bernhard is a frog. There is almost no chance that if either Daniel dropped the milk, or Greg is a swan, then John went to the kitchen. It is highly unlikely that if either Greg is a swan, or Daniel dropped the milk, then Lily is yellow.
hypothesis: There is almost no chance that lily is yellow, and Julius is a rhino.
valid_hypothesis: There is almost no chance that lily is yellow, and Julius is a rhino.
invalid_hypothesis: It is highly likely that lily is yellow, and Julius is a rhino.
hypothesis_assertion: Lily is yellow, and Julius is a rhino.