context: Chances are about even that Mary went to the office. There is almost no chance that Lily is a swan. Chances are about even that Greg is green. We doubt that if either Greg is green, or Mary went to the office, then Antoine is hungry. Chances are about even that if Lily is a swan, or Mary went to the office, then Bernhard is a lion. It is probably the case that if either Mary went to the office, or Lily is a swan, then Brian is gray.
hypothesis: There is a very good chance that lily is a swan, or Brian is gray.
valid_hypothesis: It is probably not the case that lily is a swan, or Brian is gray.
invalid_hypothesis: There is a very good chance that lily is a swan, or Brian is gray.
hypothesis_assertion: Lily is a swan, or Brian is gray.