context: There is a better than even chance that Lily is yellow. It is probably the case that Greg is a swan. It is improbable that Brian is yellow.
hypothesis: There is a better than even chance that either Lily is yellow, or Brian is yellow.
valid_hypothesis: There is a better than even chance that either Lily is yellow, or Brian is yellow.
invalid_hypothesis: It is highly unlikely that either Lily is yellow, or Brian is yellow.
hypothesis_assertion: Either Lily is yellow, or Brian is yellow.