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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 .
 Docklands, Thames Gateway, London
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Docklands, Thames Gateway, London