context: We doubt that Brian is a swan. It is highly likely that Sandra left the apple. It is probable that Julius is a rhino.
hypothesis: We believe that brian is a swan, and Julius is a rhino.
valid_hypothesis: There is little chance that brian is a swan, and Julius is a rhino.
invalid_hypothesis: We believe that brian is a swan, and Julius is a rhino.
hypothesis_assertion: Brian is a swan, and Julius is a rhino.