context: There is a very good chance that Lily is a rhino. It is probable that Brian is a lion. It is likely that John moved to the garden. It is highly likely that if either John moved to the garden, or Brian is a lion, then Julius is a swan. It is probable that if either Lily is a rhino, or John moved to the garden, then Sandra got the milk. There is a better than even chance that if John moved to the garden, and Lily is a rhino, then Mary went to the hallway.
hypothesis: We believe that either John moved to the garden, or Sandra got the milk.
valid_hypothesis: We believe that either John moved to the garden, or Sandra got the milk.
invalid_hypothesis: It is impossible that either John moved to the garden, or Sandra got the milk.
hypothesis_assertion: Either John moved to the garden, or Sandra got the milk.