premise: Young man with glasses and two small pigtails on front of his hair with bloody face appears to be in Emergency room waiting area. hypothesis: A perfectly healthy person with a crew cut is walking into the hospital.
contradiction: If someone has a bloody face, they are not perfectly healthy.  If someone has two small pigtails, they do not have a crew cut.  If someone is walking into the hospital, they are not yet in the emergency room waiting area.