28079
In 1968 , following a seven-year break from live performances , he returned to the stage in the acclaimed television comeback special " Elvis " , which led to an extended Las Vegas concert residency and a string of highly profitable tours .
 location: Las Vegas
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Las Vegas 
Answer:
 location: Las Vegas