context: Chances are about even that Julius is a swan. It is improbable that Brian is yellow. It is almost certain that Emily is a sheep.
hypothesis: There is a better than even chance that brian is yellow, or Julius is a swan.
valid_hypothesis: There is a better than even chance that brian is yellow, or Julius is a swan.
invalid_hypothesis: It is highly unlikely that brian is yellow, or Julius is a swan.
hypothesis_assertion: Brian is yellow, or Julius is a swan.