context: We doubt that Greg is a swan. It is improbable that Lily is yellow. There is a better than even chance that Brian is a frog. It is probably the case that if either Greg is a swan, or Brian is a frog, then Fred dropped the apple. It is likely that if Lily is yellow, or Greg is a swan, then Daniel grabbed the apple. It is probably the case that if Lily is yellow, or Greg is a swan, then Julius is green.
hypothesis: It is probable that greg is a swan, or Julius is green.
valid_hypothesis: It is probably not the case that greg is a swan, or Julius is green.
invalid_hypothesis: It is probable that greg is a swan, or Julius is green.
hypothesis_assertion: Greg is a swan, or Julius is green.