premise: In an outdoor location with spectators in the background, a young man in a karate uniform with a blue belt has his arm around the neck of a young woman in a karate uniform with a brown belt while she grips his arm with both hands. hypothesis: Two people are in a karate competition.
neutral: Just because there are two people in karate uniforms does not mean that there are two people competing in a karate competition. They could be part of the class, or they could be on their way to something, or they could be cause playing. There are numerous reasons why there might be two people in karate outfits besides that they are competitors.