93905
An anomaly to the smoking ban are on cross-border trains between Hong Kong and mainland China as they are operated jointly between MTR Corporation and the Chinese Railways , of whom the latter allows smoking in the restaurant car and in the vestibules at the end of the cars , but not in the seating area .
 location: Hong Kong
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: Hong Kong 
Answer:
 location: Hong Kong