context: We doubt that Greg is a rhino. Chances are slight that Brian is a frog. It is likely that Bernhard is a swan. It is certain that if Bernhard is a swan, and Greg is a rhino, then Lily is green. It is certain that if either Bernhard is a swan, or Brian is a frog, then Mary moved to the garden. There is a very good chance that if Brian is a frog, or Greg is a rhino, then John took the apple.
hypothesis: We doubt that bernhard is a swan, or Brian is a frog.
valid_hypothesis: We believe that bernhard is a swan, or Brian is a frog.
invalid_hypothesis: We doubt that bernhard is a swan, or Brian is a frog.
hypothesis_assertion: Bernhard is a swan, or Brian is a frog.