context: It is impossible that Bernhard is white. It is probably the case that Daniel got the apple. We doubt that John moved to the garden. It is highly unlikely that if either John moved to the garden, or Daniel got the apple, then Greg is a lion. Chances are about even that if Daniel got the apple, and Bernhard is white, then Brian is a lion. It is highly likely that if either Daniel got the apple, or John moved to the garden, then Mary went to the bedroom.
hypothesis: There is a better than even chance that greg is a lion, or Mary went to the bedroom.
valid_hypothesis: There is a better than even chance that greg is a lion, or Mary went to the bedroom.
invalid_hypothesis: There is little chance that greg is a lion, or Mary went to the bedroom.
hypothesis_assertion: Greg is a lion, or Mary went to the bedroom.