context: There is a better than even chance that Brian is a frog. It is highly unlikely that Gertrude is a sheep. There is almost no chance that Julius is a swan. It is almost certain that if either Julius is a swan, or Brian is a frog, then Jason is bored. It is almost certain that if either Brian is a frog, or Gertrude is a sheep, then John went to the bedroom. It is highly unlikely that if Gertrude is a sheep, or Julius is a swan, then Mary took the apple.
hypothesis: It is certain that gertrude is a sheep, and Brian is a frog.
valid_hypothesis: There is almost no chance that gertrude is a sheep, and Brian is a frog.
invalid_hypothesis: It is certain that gertrude is a sheep, and Brian is a frog.
hypothesis_assertion: Gertrude is a sheep, and Brian is a frog.