context: We doubt that Bernhard is a swan. There is almost no chance that Mary moved to the office. There is a better than even chance that Bill went to the bedroom. It is probably not the case that if either Mary moved to the office, or Bernhard is a swan, then Yann is thirsty. It is certain that if Mary moved to the office, or Bernhard is a swan, then Sandra grabbed the milk. There is a very good chance that if Bill went to the bedroom, or Mary moved to the office, then John discarded the milk.
hypothesis: There is a better than even chance that bernhard is a swan, or John discarded the milk.
valid_hypothesis: There is a better than even chance that bernhard is a swan, or John discarded the milk.
invalid_hypothesis: Chances are slight that bernhard is a swan, or John discarded the milk.
hypothesis_assertion: Bernhard is a swan, or John discarded the milk.