context: It is almost certain that Bernhard is a frog. There is a very good chance that John moved to the office. Chances are about even that Greg is a rhino. We doubt that if either John moved to the office, or Greg is a rhino, then Gertrude is a wolf. We doubt that if John moved to the office, or Greg is a rhino, then Lily is green. There is a very good chance that if Bernhard is a frog, or Greg is a rhino, then Bill went to the bedroom.
hypothesis: We believe that bill went to the bedroom, and Bernhard is a frog.
valid_hypothesis: We believe that bill went to the bedroom, and Bernhard is a frog.
invalid_hypothesis: Chances are slight that bill went to the bedroom, and Bernhard is a frog.
hypothesis_assertion: Bill went to the bedroom, and Bernhard is a frog.