Question: When was the stratosphere hotel built in las vegas?
Disambiguated questions and answers: question: When was the ground breaking for the Stratosphere Hotel?
When did construction begin on the Stratosphere Hotel?
When did the Stratosphere Hotel open?
answer: November 5, 1991
February 1992
April 30. 1996
question: When was construction started on the stratosphere hotel built in las vegas?
When was groundbreaking on the stratosphere hotel built in las vegas?
When was the stratosphere hotel opened in las vegas?
answer: February 1992
November 5, 1991
April 30, 1996
Natural Questions answer: 1996 (from the Wikipedia article "Stratosphere Las Vegas")