context: Chances are slight that John moved to the office. It is likely that Bernhard is gray. It is probably not the case that Mary dropped the milk. It is unlikely that if either John moved to the office, or Mary dropped the milk, then Julius is a swan. It is almost certain that if either Mary dropped the milk, or John moved to the office, then Greg is a frog. It is highly likely that if Bernhard is gray, or John moved to the office, then Brian is green.
hypothesis: It is improbable that either Greg is a frog, or Mary dropped the milk.
valid_hypothesis: It is improbable that either Greg is a frog, or Mary dropped the milk.
invalid_hypothesis: It is likely that either Greg is a frog, or Mary dropped the milk.
hypothesis_assertion: Either Greg is a frog, or Mary dropped the milk.