context: It is certain that Sandra left the football. It is highly unlikely that Gertrude is a mouse. It is certain that Mary went to the garden. There is a very good chance that if Gertrude is a mouse, or Sandra left the football, then Brian is green. It is almost certain that if Mary went to the garden, and Gertrude is a mouse, then Lily is white. We doubt that if either Gertrude is a mouse, or Sandra left the football, then Bernhard is gray.
hypothesis: It is probably not the case that either Gertrude is a mouse, or Bernhard is gray.
valid_hypothesis: It is probably not the case that either Gertrude is a mouse, or Bernhard is gray.
invalid_hypothesis: We believe that either Gertrude is a mouse, or Bernhard is gray.
hypothesis_assertion: Either Gertrude is a mouse, or Bernhard is gray.