context: It is highly likely that Brian is a swan. Chances are slight that Julius is a rhino. It is probably the case that Greg is a swan.
hypothesis: It is highly likely that brian is a swan, or Julius is a rhino.
valid_hypothesis: It is highly likely that brian is a swan, or Julius is a rhino.
invalid_hypothesis: It is unlikely that brian is a swan, or Julius is a rhino.
hypothesis_assertion: Brian is a swan, or Julius is a rhino.