context: There is a very good chance that Jeff went to the garden. It is highly unlikely that Brian is gray. We believe that John took the apple. Chances are slight that if Jeff went to the garden, and John took the apple, then Greg is yellow. It is impossible that if Brian is gray, and John took the apple, then Bernhard is a swan. It is unlikely that if Jeff went to the garden, and Brian is gray, then Winona is a cat.
hypothesis: It is highly unlikely that brian is gray, and Jeff went to the garden.
valid_hypothesis: It is highly unlikely that brian is gray, and Jeff went to the garden.
invalid_hypothesis: It is probably the case that brian is gray, and Jeff went to the garden.
hypothesis_assertion: Brian is gray, and Jeff went to the garden.