context: We believe that Mary went to the office. It is probably the case that Sandra got the apple. We doubt that Brian is green. There is a better than even chance that if Brian is green, and Sandra got the apple, then Bernhard is a frog. It is probable that if either Sandra got the apple, or Mary went to the office, then Fred is in the bedroom. There is little chance that if Sandra got the apple, and Brian is green, then Julius is a rhino.
hypothesis: It is highly likely that fred is in the bedroom, or Bernhard is a frog.
valid_hypothesis: It is probably not the case that fred is in the bedroom, or Bernhard is a frog.
invalid_hypothesis: It is highly likely that fred is in the bedroom, or Bernhard is a frog.
hypothesis_assertion: Fred is in the bedroom, or Bernhard is a frog.