context: It is improbable that Brian is gray. It is probably the case that Julius is a swan. It is improbable that Greg is a lion. There is a better than even chance that if either Greg is a lion, or Brian is gray, then John moved to the garden. It is improbable that if Brian is gray, and Julius is a swan, then Lily is green. It is highly unlikely that if Brian is gray, or Julius is a swan, then Jessica is a mouse.
hypothesis: It is improbable that either Lily is green, or Brian is gray.
valid_hypothesis: It is improbable that either Lily is green, or Brian is gray.
invalid_hypothesis: It is almost certain that either Lily is green, or Brian is gray.
hypothesis_assertion: Either Lily is green, or Brian is gray.