context: It is almost certain that Gertrude is a sheep. It is unlikely that Bernhard is gray. It is impossible that John is in the garden.
hypothesis: It is impossible that gertrude is a sheep, or Bernhard is gray.
valid_hypothesis: It is almost certain that gertrude is a sheep, or Bernhard is gray.
invalid_hypothesis: It is impossible that gertrude is a sheep, or Bernhard is gray.
hypothesis_assertion: Gertrude is a sheep, or Bernhard is gray.