context: It is improbable that Brian is white. Chances are about even that Mary grabbed the milk. There is almost no chance that Greg is a lion.
hypothesis: It is highly unlikely that either Greg is a lion, or Mary grabbed the milk.
valid_hypothesis: Chances are about even that either Greg is a lion, or Mary grabbed the milk.
invalid_hypothesis: It is highly unlikely that either Greg is a lion, or Mary grabbed the milk.
hypothesis_assertion: Either Greg is a lion, or Mary grabbed the milk.