context: It is unlikely that Mary went to the bedroom. Chances are slight that Bernhard is a swan. It is improbable that Greg is a rhino.
hypothesis: It is unlikely that either Bernhard is a swan, or Greg is a rhino.
valid_hypothesis: It is unlikely that either Bernhard is a swan, or Greg is a rhino.
invalid_hypothesis: It is highly likely that either Bernhard is a swan, or Greg is a rhino.
hypothesis_assertion: Either Bernhard is a swan, or Greg is a rhino.