context: It is highly unlikely that Bernhard is a swan. There is almost no chance that Julius is a lion. Chances are about even that Mary moved to the garden.
hypothesis: It is impossible that bernhard is a swan, and Julius is a lion.
valid_hypothesis: It is impossible that bernhard is a swan, and Julius is a lion.
invalid_hypothesis: It is highly likely that bernhard is a swan, and Julius is a lion.
hypothesis_assertion: Bernhard is a swan, and Julius is a lion.