context: Chances are slight that Lily is a rhino. There is a very good chance that Jeff went to the office. It is highly unlikely that Greg is a swan.
hypothesis: It is improbable that either Greg is a swan, or Lily is a rhino.
valid_hypothesis: It is improbable that either Greg is a swan, or Lily is a rhino.
invalid_hypothesis: There is a very good chance that either Greg is a swan, or Lily is a rhino.
hypothesis_assertion: Either Greg is a swan, or Lily is a rhino.