premise: A motorcycle cop examines a bright neon reflective vest while standing next to two brightly colored police motorcycles. hypothesis: A detective examines a dead boy while waiting for his partner.
contradiction: A motorcycle cop holds a different position in a police department  than a detective. The motorcycle cop and the detective are two different people. One is examining a red vest while the other is examining a dead boy. They may or may  not even be at the same location.