context: It is probably not the case that Julius is a rhino. It is probably the case that Bernhard is a swan. There is little chance that Brian is a swan.
hypothesis: We believe that bernhard is a swan, or Brian is a swan.
valid_hypothesis: We believe that bernhard is a swan, or Brian is a swan.
invalid_hypothesis: It is highly unlikely that bernhard is a swan, or Brian is a swan.
hypothesis_assertion: Bernhard is a swan, or Brian is a swan.