context: Chances are slight that Brian is gray. It is improbable that Sandra left the football. There is a very good chance that Jessica is a mouse. It is probably the case that if Jessica is a mouse, or Brian is gray, then Yann is tired. It is improbable that if Sandra left the football, or Jessica is a mouse, then Julius is a frog. It is almost certain that if Brian is gray, and Jessica is a mouse, then Bernhard is a lion.
hypothesis: It is improbable that bernhard is a lion, and Jessica is a mouse.
valid_hypothesis: It is improbable that bernhard is a lion, and Jessica is a mouse.
invalid_hypothesis: There is a better than even chance that bernhard is a lion, and Jessica is a mouse.
hypothesis_assertion: Bernhard is a lion, and Jessica is a mouse.