context: We believe that Julius is a swan. There is little chance that Sandra left the apple. It is improbable that Emily is a sheep. It is probably not the case that if Julius is a swan, and Emily is a sheep, then John put down the milk. It is likely that if Julius is a swan, or Sandra left the apple, then Bill went to the hallway. We doubt that if either Julius is a swan, or Emily is a sheep, then Lily is a frog.
hypothesis: It is likely that either Sandra left the apple, or Julius is a swan.
valid_hypothesis: It is likely that either Sandra left the apple, or Julius is a swan.
invalid_hypothesis: There is little chance that either Sandra left the apple, or Julius is a swan.
hypothesis_assertion: Either Sandra left the apple, or Julius is a swan.