1. All plumbers wear white t-shirts.
2. Everyone who has purple hair is psychic.
3. Everyone who doesn't have purple hair sings '80s pop songs at karaoke bars.
4. Nobody who sings '80s pop songs at karaoke bars wears white t-shirts.
5. John is a plumber.

John is psychic.
John is not psychic.
All psychics are plumbers.
No psychics are plumbers.
None of the above.