context: There is almost no chance that John went to the hallway. There is a very good chance that Bernhard is a lion. There is a very good chance that Jessica is a cat. It is certain that if John went to the hallway, or Bernhard is a lion, then Julius is white. It is impossible that if John went to the hallway, and Jessica is a cat, then Daniel dropped the apple. Chances are about even that if John went to the hallway, and Bernhard is a lion, then Greg is a swan.
hypothesis: It is impossible that either Daniel dropped the apple, or Julius is white.
valid_hypothesis: There is a very good chance that either Daniel dropped the apple, or Julius is white.
invalid_hypothesis: It is impossible that either Daniel dropped the apple, or Julius is white.
hypothesis_assertion: Either Daniel dropped the apple, or Julius is white.