Schoolchildren have regularly used the Smith's yard as a short-cut for countless years without permission. The Smiths put up a fence to stop the traffic. A judge says the fence must come down, an easement has been created. What type of easement has been created, and what type of estate do the Smiths now have? easement appurtenant, the servient easement appurtenant, the dominant easement in gross, the dominant easement in gross, the servient