context: There is a very good chance that Bill left the milk. It is improbable that Bernhard is a swan. It is probably the case that Greg is gray. It is improbable that if Greg is gray, or Bernhard is a swan, then Sandra got the football. Chances are about even that if Bill left the milk, or Bernhard is a swan, then Yann is tired. It is probable that if Greg is gray, and Bill left the milk, then Emily is a sheep.
hypothesis: There is almost no chance that yann is tired, and Sandra got the football.
valid_hypothesis: There is almost no chance that yann is tired, and Sandra got the football.
invalid_hypothesis: It is probably the case that yann is tired, and Sandra got the football.
hypothesis_assertion: Yann is tired, and Sandra got the football.