context: Chances are slight that Gertrude is a mouse. We doubt that Julius is a frog. We believe that Brian is gray. There is a very good chance that if Gertrude is a mouse, or Julius is a frog, then Emily is a mouse. There is a better than even chance that if either Julius is a frog, or Brian is gray, then John went to the garden. It is certain that if either Julius is a frog, or Gertrude is a mouse, then Lily is green.
hypothesis: It is likely that john went to the garden, and Gertrude is a mouse.
valid_hypothesis: It is highly unlikely that john went to the garden, and Gertrude is a mouse.
invalid_hypothesis: It is likely that john went to the garden, and Gertrude is a mouse.
hypothesis_assertion: John went to the garden, and Gertrude is a mouse.