Question: What mostly decommissioned nuclear production complex operated by the United States is overlooked by Rattlesnake Mountain?
Sentence (from "Rattlesnake Mountain, Benton County, Washington"): Parts of the western slope are privately owned ranchland, while the eastern slope is under the federal protection of the Arid Lands Ecology Reserve, a unit of the Hanford Reach National Monument, managed by the United States Fish and Wildlife Service.
Relevant evidence: No