context: It is impossible that Mary went to the office. It is likely that Bernhard is gray. It is probably not the case that Greg is a swan. It is impossible that if Bernhard is gray, or Mary went to the office, then Brian is white. It is probable that if either Mary went to the office, or Bernhard is gray, then Lily is green. It is improbable that if Bernhard is gray, and Greg is a swan, then Sandra grabbed the milk.
hypothesis: There is almost no chance that either Brian is white, or Sandra grabbed the milk.
valid_hypothesis: There is almost no chance that either Brian is white, or Sandra grabbed the milk.
invalid_hypothesis: We believe that either Brian is white, or Sandra grabbed the milk.
hypothesis_assertion: Either Brian is white, or Sandra grabbed the milk.