context: It is probably the case that Lily is a lion. It is highly likely that Brian is a frog. It is improbable that Greg is a rhino. We believe that if Lily is a lion, and Greg is a rhino, then Daniel left the milk. There is a very good chance that if either Lily is a lion, or Brian is a frog, then John moved to the office. We doubt that if either Lily is a lion, or Greg is a rhino, then Mary dropped the milk.
hypothesis: It is unlikely that either Greg is a rhino, or Mary dropped the milk.
valid_hypothesis: It is unlikely that either Greg is a rhino, or Mary dropped the milk.
invalid_hypothesis: It is almost certain that either Greg is a rhino, or Mary dropped the milk.
hypothesis_assertion: Either Greg is a rhino, or Mary dropped the milk.