Question: When was mandalay bay hotel in las vegas built?
Disambiguated questions and answers: question: When did Mandalay Bay Hotel in Las Vegas start getting built?
When did Mandalay Bay Hotel in Las Vegas stop getting built (open)?
answer: 1996
March 2, 1999
Natural Questions answer: March 2 , 1999 ; (from the Wikipedia article "Mandalay Bay")