context: We believe that Daniel grabbed the apple. Chances are about even that Greg is green. There is little chance that Bernhard is a swan. Chances are slight that if either Daniel grabbed the apple, or Bernhard is a swan, then Brian is a lion. We doubt that if Daniel grabbed the apple, and Bernhard is a swan, then John went to the office. It is certain that if Bernhard is a swan, and Greg is green, then Mary is in the garden.
hypothesis: Chances are slight that either Daniel grabbed the apple, or Brian is a lion.
valid_hypothesis: It is probable that either Daniel grabbed the apple, or Brian is a lion.
invalid_hypothesis: Chances are slight that either Daniel grabbed the apple, or Brian is a lion.
hypothesis_assertion: Either Daniel grabbed the apple, or Brian is a lion.