Question: Which nuclear waste repository near Las Vegas Valley is represented by children's cartoon character Yucca Mountain Johnny?
Sentence (from "Yucca Mountain nuclear waste repository"): The Yucca Mountain Nuclear Waste Repository, as designated by the Nuclear Waste Policy Act amendments of 1987, is to be a deep geological repository storage facility within Yucca Mountain for spent nuclear fuel and other high level radioactive waste in the United States.
Relevant evidence: Yes