context: It is impossible that Sandra got the milk. We doubt that John went to the hallway. We believe that Bernhard is a lion. There is almost no chance that if either Sandra got the milk, or John went to the hallway, then Bill moved to the office. We doubt that if either John went to the hallway, or Bernhard is a lion, then Lily is a frog. There is a better than even chance that if Sandra got the milk, or John went to the hallway, then Julius is a swan.
hypothesis: It is unlikely that either John went to the hallway, or Bill moved to the office.
valid_hypothesis: It is unlikely that either John went to the hallway, or Bill moved to the office.
invalid_hypothesis: It is certain that either John went to the hallway, or Bill moved to the office.
hypothesis_assertion: Either John went to the hallway, or Bill moved to the office.