context: We believe that John dropped the apple. It is certain that Lily is gray. There is a better than even chance that Greg is a swan.
hypothesis: There is little chance that greg is a swan, and Lily is gray.
valid_hypothesis: There is a better than even chance that greg is a swan, and Lily is gray.
invalid_hypothesis: There is little chance that greg is a swan, and Lily is gray.
hypothesis_assertion: Greg is a swan, and Lily is gray.