premise1: A brown and white dogs stands in front of a wooden building while tennis balls fly through the air.
premise2: A brown and white dog in front of a shed overwhelmed by the onslaught of tennis balls.
premise3: A big dog stands on his hand leg as tennis balls are thrown his direction.
premise4: A dog stands on his hind legs amid a shower of tennis balls.
premise: A brown and white dogs stands in front of a wooden building while tennis balls fly through the air. A brown and white dog in front of a shed overwhelmed by the onslaught of tennis balls. A big dog stands on his hand leg as tennis balls are thrown his direction. A dog stands on his hind legs amid a shower of tennis balls.
hypothesis: Dogs facing each other.