context: There is little chance that Mary went to the hallway. Chances are about even that John moved to the office. We believe that Gertrude is a cat. It is highly likely that if either Gertrude is a cat, or Mary went to the hallway, then Julius is white. It is highly unlikely that if either Mary went to the hallway, or Gertrude is a cat, then Sandra grabbed the apple. It is probable that if John moved to the office, and Gertrude is a cat, then Lily is gray.
hypothesis: There is a very good chance that mary went to the hallway, or Gertrude is a cat.
valid_hypothesis: There is a very good chance that mary went to the hallway, or Gertrude is a cat.
invalid_hypothesis: It is impossible that mary went to the hallway, or Gertrude is a cat.
hypothesis_assertion: Mary went to the hallway, or Gertrude is a cat.