context: There is a better than even chance that Julius is a swan. There is a better than even chance that John went to the garden. We believe that Greg is a lion.
hypothesis: It is certain that either Greg is a lion, or Julius is a swan.
valid_hypothesis: Chances are about even that either Greg is a lion, or Julius is a swan.
invalid_hypothesis: It is certain that either Greg is a lion, or Julius is a swan.
hypothesis_assertion: Either Greg is a lion, or Julius is a swan.