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With the development of the eastern Docklands as part of the Thames Gateway initiative and London 's staging of the 2012 Summer Olympics , several extensions and enhancements were undertaken .
 location: Docklands; location: Thames Gateway; location: London
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: Docklands, Thames Gateway, London 
Answer:
 location: Docklands; location: Thames Gateway; location: London