context: There is almost no chance that Brian is gray. Chances are about even that John moved to the office. It is certain that Gertrude is a wolf. It is improbable that if John moved to the office, and Brian is gray, then Mary dropped the apple. It is almost certain that if John moved to the office, or Brian is gray, then Julius is yellow. It is certain that if either John moved to the office, or Brian is gray, then Greg is a lion.
hypothesis: It is certain that gertrude is a wolf, and Brian is gray.
valid_hypothesis: There is almost no chance that gertrude is a wolf, and Brian is gray.
invalid_hypothesis: It is certain that gertrude is a wolf, and Brian is gray.
hypothesis_assertion: Gertrude is a wolf, and Brian is gray.