context: It is probably the case that Julius is a swan. Chances are slight that Brian is white. It is highly likely that Sandra took the apple. It is certain that if Sandra took the apple, or Brian is white, then Lily is a rhino. We believe that if Julius is a swan, or Sandra took the apple, then Greg is a frog. It is highly unlikely that if Julius is a swan, or Brian is white, then John grabbed the milk.
hypothesis: There is a better than even chance that lily is a rhino, and Julius is a swan.
valid_hypothesis: There is a better than even chance that lily is a rhino, and Julius is a swan.
invalid_hypothesis: It is improbable that lily is a rhino, and Julius is a swan.
hypothesis_assertion: Lily is a rhino, and Julius is a swan.