context: There is little chance that Bernhard is a rhino. We doubt that Lily is gray. We believe that Greg is a swan.
hypothesis: It is probable that greg is a swan, and Lily is gray.
valid_hypothesis: There is little chance that greg is a swan, and Lily is gray.
invalid_hypothesis: It is probable that greg is a swan, and Lily is gray.
hypothesis_assertion: Greg is a swan, and Lily is gray.