160556
Upon MTR 's takeover , elements of the existing stations were modified to match MTR Hong Kong 's styles , such as changing of lighting , station maps and signs , posters and the introduction of station art similar to those found on MTR 's Hong Kong stations .
 None
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:  
Answer:
 None