context: It is probable that Bernhard is green. It is likely that Mary moved to the garden. It is likely that Greg is a lion. It is unlikely that if Greg is a lion, or Mary moved to the garden, then Fred is in the park. It is certain that if Mary moved to the garden, and Bernhard is green, then Sandra got the milk. It is probable that if Bernhard is green, and Greg is a lion, then Brian is gray.
hypothesis: Chances are about even that either Greg is a lion, or Mary moved to the garden.
valid_hypothesis: Chances are about even that either Greg is a lion, or Mary moved to the garden.
invalid_hypothesis: It is impossible that either Greg is a lion, or Mary moved to the garden.
hypothesis_assertion: Either Greg is a lion, or Mary moved to the garden.