context: Chances are slight that Bernhard is yellow. It is likely that Julius is a swan. We believe that Fred went to the office.
hypothesis: There is little chance that either Fred went to the office, or Bernhard is yellow.
valid_hypothesis: It is likely that either Fred went to the office, or Bernhard is yellow.
invalid_hypothesis: There is little chance that either Fred went to the office, or Bernhard is yellow.
hypothesis_assertion: Either Fred went to the office, or Bernhard is yellow.