context: It is impossible that Lily is gray. There is a better than even chance that Greg is a swan. There is little chance that Gertrude is a mouse.
hypothesis: There is a better than even chance that either Greg is a swan, or Gertrude is a mouse.
valid_hypothesis: There is a better than even chance that either Greg is a swan, or Gertrude is a mouse.
invalid_hypothesis: There is little chance that either Greg is a swan, or Gertrude is a mouse.
hypothesis_assertion: Either Greg is a swan, or Gertrude is a mouse.