context: It is probably not the case that Bernhard is a swan. It is improbable that Greg is yellow. We believe that Mary moved to the office.
hypothesis: There is almost no chance that bernhard is a swan, and Greg is yellow.
valid_hypothesis: There is almost no chance that bernhard is a swan, and Greg is yellow.
invalid_hypothesis: It is highly likely that bernhard is a swan, and Greg is yellow.
hypothesis_assertion: Bernhard is a swan, and Greg is yellow.