Question: On the  American reality competition Under the Gunn, singer Zendaya appear as a guest judge with what other single name singer?
Sentence (from "RuPaul's Drag Race"): "RuPaul's Drag Race" employs a panel of judges, including RuPaul, Michelle Visage, Ross Mathews, Carson Kressley, and a host of other guest judges, who critique contestants' progress throughout the competition.
Relevant evidence: No