context: It is probable that Julius is a swan. We believe that Greg is a rhino. There is a better than even chance that Brian is green.
hypothesis: It is highly likely that brian is green, or Julius is a swan.
valid_hypothesis: It is highly likely that brian is green, or Julius is a swan.
invalid_hypothesis: It is impossible that brian is green, or Julius is a swan.
hypothesis_assertion: Brian is green, or Julius is a swan.