context: It is unlikely that Jeff put down the apple. Chances are slight that Lily is gray. It is improbable that Greg is a rhino.
hypothesis: We doubt that greg is a rhino, or Lily is gray.
valid_hypothesis: We doubt that greg is a rhino, or Lily is gray.
invalid_hypothesis: It is highly likely that greg is a rhino, or Lily is gray.
hypothesis_assertion: Greg is a rhino, or Lily is gray.