context: It is almost certain that Lily is a rhino. We believe that Sandra left the milk. It is highly likely that Julius is a swan. It is unlikely that if Lily is a rhino, or Sandra left the milk, then Bill moved to the office. We believe that if Sandra left the milk, and Julius is a swan, then John picked up the apple. Chances are about even that if Julius is a swan, and Lily is a rhino, then Brian is a frog.
hypothesis: It is highly likely that julius is a swan, or John picked up the apple.
valid_hypothesis: It is highly likely that julius is a swan, or John picked up the apple.
invalid_hypothesis: There is little chance that julius is a swan, or John picked up the apple.
hypothesis_assertion: Julius is a swan, or John picked up the apple.