context: It is almost certain that Emily is a wolf. We doubt that Brian is gray. It is almost certain that Greg is a frog. It is probably the case that if Greg is a frog, or Emily is a wolf, then Fred left the milk. We believe that if either Emily is a wolf, or Brian is gray, then Jessica is a mouse. Chances are slight that if Brian is gray, and Emily is a wolf, then Lily is a swan.
hypothesis: There is a very good chance that brian is gray, and Jessica is a mouse.
valid_hypothesis: It is impossible that brian is gray, and Jessica is a mouse.
invalid_hypothesis: There is a very good chance that brian is gray, and Jessica is a mouse.
hypothesis_assertion: Brian is gray, and Jessica is a mouse.