context: Chances are about even that Julius is a swan. It is highly likely that Daniel got the football. There is a very good chance that Lily is a rhino. There is a very good chance that if Daniel got the football, or Julius is a swan, then Sandra dropped the milk. Chances are about even that if Julius is a swan, and Lily is a rhino, then Greg is white. It is probably the case that if Lily is a rhino, or Daniel got the football, then John went to the bedroom.
hypothesis: Chances are about even that julius is a swan, and Lily is a rhino.
valid_hypothesis: Chances are about even that julius is a swan, and Lily is a rhino.
invalid_hypothesis: It is almost certain that julius is a swan, and Lily is a rhino.
hypothesis_assertion: Julius is a swan, and Lily is a rhino.