premise: a snowboarder wearing a green hat is riding along a metal railing. hypothesis: A snowboarder in a green hat rides along a metal railing in a competition.
neutral: Riding rails is not always for a competition, and that was never implied in the first sentence.|neutral: A snowboarder riding a railing does not necessarily imply that he is in a competition.|neutral: The snowboarder may not necessarily be riding along the railing in any sort of competition.