context: There is little chance that Sandra grabbed the milk. We believe that John went to the garden. It is highly likely that Bernhard is green. We doubt that if John went to the garden, and Sandra grabbed the milk, then Jeff dropped the apple. Chances are about even that if Sandra grabbed the milk, and John went to the garden, then Mary moved to the office. It is highly unlikely that if Sandra grabbed the milk, and John went to the garden, then Julius is gray.
hypothesis: It is likely that either Jeff dropped the apple, or Mary moved to the office.
valid_hypothesis: It is highly unlikely that either Jeff dropped the apple, or Mary moved to the office.
invalid_hypothesis: It is likely that either Jeff dropped the apple, or Mary moved to the office.
hypothesis_assertion: Either Jeff dropped the apple, or Mary moved to the office.