context: It is likely that Julius is green. Chances are slight that Brian is a swan. Chances are slight that Greg is yellow.
hypothesis: It is highly unlikely that brian is a swan, and Julius is green.
valid_hypothesis: It is highly unlikely that brian is a swan, and Julius is green.
invalid_hypothesis: It is probable that brian is a swan, and Julius is green.
hypothesis_assertion: Brian is a swan, and Julius is green.