context: Chances are slight that Yann is tired. There is a very good chance that Gertrude is a mouse. We doubt that Bernhard is green. Chances are slight that if Bernhard is green, and Gertrude is a mouse, then Bill went to the office. It is probably the case that if Yann is tired, or Bernhard is green, then Brian is gray. There is almost no chance that if Gertrude is a mouse, and Yann is tired, then Lily is white.
hypothesis: It is certain that lily is white, or Yann is tired.
valid_hypothesis: There is little chance that lily is white, or Yann is tired.
invalid_hypothesis: It is certain that lily is white, or Yann is tired.
hypothesis_assertion: Lily is white, or Yann is tired.