Question: In what year did a mid-sized auditorium, owned and operated by Caesars Entertainment Corporation first host Justin Timberlake's annual concert to benefit the Shriners Hospitals for Children?
Sentence (from "The AXIS"): The AXIS (known as The AXIS powered by Monster for sponsorship purposes, also referred to as the AXIS Theater) is a mid-sized auditorium located at Planet Hollywood Las Vegas on the Las Vegas Strip.
Relevant evidence: Yes