context: It is unlikely that Mary went to the hallway. It is impossible that Greg is a frog. There is little chance that John moved to the garden. There is a very good chance that if either Greg is a frog, or John moved to the garden, then Julius is a swan. It is likely that if Greg is a frog, or Mary went to the hallway, then Sandra got the milk. It is certain that if Greg is a frog, and Mary went to the hallway, then Brian is a lion.
hypothesis: We doubt that either Greg is a frog, or Mary went to the hallway.
valid_hypothesis: We doubt that either Greg is a frog, or Mary went to the hallway.
invalid_hypothesis: It is probably the case that either Greg is a frog, or Mary went to the hallway.
hypothesis_assertion: Either Greg is a frog, or Mary went to the hallway.