context: There is little chance that Mary went to the garden. It is probably not the case that Sandra got the apple. It is certain that John left the milk. It is highly likely that if John left the milk, and Mary went to the garden, then Greg is a swan. It is highly unlikely that if John left the milk, and Mary went to the garden, then Brian is a rhino. It is highly likely that if John left the milk, and Mary went to the garden, then Julius is yellow.
hypothesis: Chances are slight that greg is a swan, or Mary went to the garden.
valid_hypothesis: Chances are slight that greg is a swan, or Mary went to the garden.
invalid_hypothesis: We believe that greg is a swan, or Mary went to the garden.
hypothesis_assertion: Greg is a swan, or Mary went to the garden.