3. Ben, the owner of Blackacre, would like to obtain per-mission to fish in Gwendolyn's pond in Greenacre, a property that adjoins his own. He would also like the right to cross over Greenacre with his car to avoid a lengthy traffic light on the main road in which his property is situated. In addition, he would like to ob-tain assurances from Gwendolyn that she will never build any structure within 300 feet of his property line or within 1,000 feet of her pond. He negotiates a deal with Gwendolyn giving him precisely what he wants in exchange for an undisclosed dollar amount. Gwendolyn executes a deed granting Ben the right to fish on her pond throughout his life, and the right for Ben or any person who purchases Blackacre from him in the future to cross over Greenacre in order to get ac-cess to a secondary road. The deed also grants to Ben and any future owners of Blackacre the assurance that no structure will ever be built on Greenacre within 300 feet of Blackacre, and that no structure will be built within 1,000 feet of Greenacre's pond during Ben's life. State in precise terms the nature of the interest in Greenacre that Ben has procured with regard to the above. Be specific.