context: Chances are slight that Sandra left the football. It is likely that Julius is yellow. It is impossible that Bernhard is a swan.
hypothesis: It is almost certain that bernhard is a swan, and Julius is yellow.
valid_hypothesis: It is impossible that bernhard is a swan, and Julius is yellow.
invalid_hypothesis: It is almost certain that bernhard is a swan, and Julius is yellow.
hypothesis_assertion: Bernhard is a swan, and Julius is yellow.