context: It is likely that Lily is a frog. It is probably the case that Brian is a lion. It is probably not the case that Jeff went to the hallway.
hypothesis: Chances are slight that either Jeff went to the hallway, or Lily is a frog.
valid_hypothesis: There is a better than even chance that either Jeff went to the hallway, or Lily is a frog.
invalid_hypothesis: Chances are slight that either Jeff went to the hallway, or Lily is a frog.
hypothesis_assertion: Either Jeff went to the hallway, or Lily is a frog.