premise: A man on a scooter with a red and white jacket on and a camera around his neck. hypothesis: A woman on a bike with a black and yellow jacket on has a phone in her hand.
contradiction: A man and a woman are two different people.  A scooter and a bike are different forms of transportation.  A red and white jacket is a different article of clothing than a black and yellow jacket.  A camera around one's neck is a different piece of technology than a phone carried in one's hand.