Question: What is the name of the American hamburger restaurant described as a "breastaurant", which features skimpily-clad female wait staff, known for serving high-calorie menu items, located in Downtown Las Vegas after it moved from Tempe, Arizona?
Sentence (from "Louis' Lunch"): Louis Lassen's restaurant is recognized in the Library of Congress as the origin of the hamburger, but other claimants and detractors exist.
Relevant evidence: No