context: There is almost no chance that Bernhard is yellow. It is impossible that Greg is a swan. We doubt that Fred is in the cinema.
hypothesis: We doubt that either Bernhard is yellow, or Fred is in the cinema.
valid_hypothesis: We doubt that either Bernhard is yellow, or Fred is in the cinema.
invalid_hypothesis: It is probably the case that either Bernhard is yellow, or Fred is in the cinema.
hypothesis_assertion: Either Bernhard is yellow, or Fred is in the cinema.