context: We doubt that Bernhard is gray. There is almost no chance that Lily is a swan. There is a better than even chance that John discarded the milk. There is a better than even chance that if John discarded the milk, or Lily is a swan, then Sandra left the football. We believe that if Lily is a swan, or John discarded the milk, then Brian is yellow. It is probably not the case that if Bernhard is gray, or John discarded the milk, then Mary went to the kitchen.
hypothesis: It is highly likely that lily is a swan, and John discarded the milk.
valid_hypothesis: There is almost no chance that lily is a swan, and John discarded the milk.
invalid_hypothesis: It is highly likely that lily is a swan, and John discarded the milk.
hypothesis_assertion: Lily is a swan, and John discarded the milk.