Think of something and 20Q will read your mind by asking a few simple questions. The object you think of should be something that most people would know about, but not a proper noun or a specific person, place or thing.
ANIMAL: Anything that is alive and can move.
VEGETABLE: Anything that is alive, but cannot move.
MINERAL: Anything that isn't alive and cannot move.
OTHER: Anything else.
Unknown: You are not sure how it should be classified (mabye no one is...)
If the 20Q A.I. does not guess the object you were thinking about, you win! Let's play.