context: It is almost certain that Greg is green. There is little chance that Lily is white. It is certain that Gertrude is a cat.
hypothesis: It is probably not the case that gertrude is a cat, or Lily is white.
valid_hypothesis: It is certain that gertrude is a cat, or Lily is white.
invalid_hypothesis: It is probably not the case that gertrude is a cat, or Lily is white.
hypothesis_assertion: Gertrude is a cat, or Lily is white.