premise: A woman cook in an apron is smiling at the camera with two other cooks in the background. hypothesis: A woman not paying attention to the camera.
contradiction: A woman smiling at a camera is directing an expression to the camera which can not happen if she is not paying attention.|contradiction: The woman can't not be paying attention to the camera if she is smiling at the camera.|contradiction: it is either the woman is  not paying attention to the camera or she is smiling at the camera.