context: It is improbable that Greg is a frog. It is probable that Julius is a lion. It is probable that John is in the hallway. Chances are about even that if Greg is a frog, and John is in the hallway, then Antoine is bored. Chances are slight that if Greg is a frog, and Julius is a lion, then Sandra got the football. We believe that if Greg is a frog, and Julius is a lion, then Jeff went to the kitchen.
hypothesis: It is certain that either Julius is a lion, or John is in the hallway.
valid_hypothesis: Chances are about even that either Julius is a lion, or John is in the hallway.
invalid_hypothesis: It is certain that either Julius is a lion, or John is in the hallway.
hypothesis_assertion: Either Julius is a lion, or John is in the hallway.