Question: Where is the darts being held in las vegas?
Disambiguated questions and answers: question: Where is the 2017 US darts masters being held in las vegas?
Where is the Las Vegas Open for darts being held in las vegas?
answer: Tropicana Las Vegas
Tropicana
Tuscany Suites and Casino
Natural Questions answer: Mandalay Bay (from the Wikipedia article "2018 US Darts Masters")