context: It is almost certain that Fred is in the office. There is a very good chance that Bernhard is a frog. It is impossible that Daniel dropped the apple. It is highly unlikely that if either Fred is in the office, or Bernhard is a frog, then Greg is yellow. Chances are slight that if either Bernhard is a frog, or Daniel dropped the apple, then Mary got the milk. We doubt that if either Bernhard is a frog, or Fred is in the office, then Julius is a swan.
hypothesis: We believe that daniel dropped the apple, or Julius is a swan.
valid_hypothesis: It is highly unlikely that daniel dropped the apple, or Julius is a swan.
invalid_hypothesis: We believe that daniel dropped the apple, or Julius is a swan.
hypothesis_assertion: Daniel dropped the apple, or Julius is a swan.