context: It is highly likely that Brian is a rhino. Chances are slight that Winona is a cat. It is almost certain that Greg is a swan. We doubt that if Greg is a swan, or Winona is a cat, then Daniel is in the garden. It is certain that if Brian is a rhino, or Winona is a cat, then Mary moved to the garden. There is almost no chance that if Greg is a swan, and Winona is a cat, then Bernhard is yellow.
hypothesis: There is almost no chance that greg is a swan, or Mary moved to the garden.
valid_hypothesis: It is certain that greg is a swan, or Mary moved to the garden.
invalid_hypothesis: There is almost no chance that greg is a swan, or Mary moved to the garden.
hypothesis_assertion: Greg is a swan, or Mary moved to the garden.