premise: A man wearing a black leather vest with a rebel flag patch on it. hypothesis: A man is wearing a jogging suit with Nike logo.
contradiction: Usually a person does not wear a black leather vest with a jogging suit, as the latter implies physical activity where the vest would be out of place. The insignia are different as well, and have a significance that would be misplaced if for example there was a Nike logo which on the leather vest, as the logo doesn't have the more confrontational tone that the rebel flag would have (and hence would be out of place if on the vest).