context: There is a better than even chance that Greg is gray. We believe that Lily is a frog. We doubt that Mary got the milk. It is certain that if Greg is gray, or Mary got the milk, then Bernhard is white. There is almost no chance that if Lily is a frog, and Greg is gray, then Bill went to the garden. There is a better than even chance that if either Greg is gray, or Lily is a frog, then John discarded the apple.
hypothesis: We believe that greg is gray, and Bill went to the garden.
valid_hypothesis: It is impossible that greg is gray, and Bill went to the garden.
invalid_hypothesis: We believe that greg is gray, and Bill went to the garden.
hypothesis_assertion: Greg is gray, and Bill went to the garden.