premise: Five snowmobile riders all wearing helmets and goggles line up in a snowy clearing in a forest in front of their snowmobiles; they are all wearing black snow pants and from left to right they are wearing a black coat, white coat, red coat, blue coat, and black coat. hypothesis: The snowmobile riders are wearing the same color of gear.
contradiction: The snowmobile riders are either wearing the same color of gear, or they are wearing a black coat, white coat, red coat, blue coat, and black coat.