context: We doubt that John put down the milk. It is unlikely that Bernhard is green. It is highly unlikely that Julius is a swan. We doubt that if John put down the milk, or Julius is a swan, then Mary is in the school. There is little chance that if Julius is a swan, and Bernhard is green, then Greg is white. There is a very good chance that if Bernhard is green, or John put down the milk, then Bill went to the hallway.
hypothesis: There is little chance that mary is in the school, or Julius is a swan.
valid_hypothesis: There is little chance that mary is in the school, or Julius is a swan.
invalid_hypothesis: We believe that mary is in the school, or Julius is a swan.
hypothesis_assertion: Mary is in the school, or Julius is a swan.