context: It is highly unlikely that Greg is green. It is highly likely that John put down the apple. It is highly likely that Sandra took the apple. We believe that if Greg is green, and Sandra took the apple, then Julius is a swan. There is almost no chance that if Sandra took the apple, and Greg is green, then Lily is yellow. It is highly unlikely that if Sandra took the apple, and John put down the apple, then Brian is green.
hypothesis: There is almost no chance that sandra took the apple, and Julius is a swan.
valid_hypothesis: There is almost no chance that sandra took the apple, and Julius is a swan.
invalid_hypothesis: There is a very good chance that sandra took the apple, and Julius is a swan.
hypothesis_assertion: Sandra took the apple, and Julius is a swan.