context: It is unlikely that Lily is a rhino. It is likely that Mary dropped the milk. It is probably not the case that Greg is gray.
hypothesis: There is a better than even chance that either Greg is gray, or Mary dropped the milk.
valid_hypothesis: There is a better than even chance that either Greg is gray, or Mary dropped the milk.
invalid_hypothesis: There is almost no chance that either Greg is gray, or Mary dropped the milk.
hypothesis_assertion: Either Greg is gray, or Mary dropped the milk.