premise: Two boys and two girls walk away from the camera, down a trail on the side of a hill wearing backpacks and jackets, though one girl does n't have a backpack on her back. hypothesis: Two boys and two girls walk away from the camera, down a trail on the side of a hill wearing backpacks and blue jackets, though one girl does n't have a backpack on her back.
neutral: Not all jackets are blue.