context: We doubt that John picked up the apple. It is impossible that Mary went to the kitchen. It is unlikely that Bernhard is white. Chances are slight that if John picked up the apple, and Bernhard is white, then Julius is a rhino. It is highly likely that if Bernhard is white, or John picked up the apple, then Brian is a swan. It is probable that if either Bernhard is white, or John picked up the apple, then Lily is a lion.
hypothesis: We doubt that either John picked up the apple, or Lily is a lion.
valid_hypothesis: We doubt that either John picked up the apple, or Lily is a lion.
invalid_hypothesis: There is a very good chance that either John picked up the apple, or Lily is a lion.
hypothesis_assertion: Either John picked up the apple, or Lily is a lion.