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On 23 July 2015 , the council voted in favour of a motion to change the official name of the city to Derry and to write to Mark H. Durkan , Northern Ireland Minister of the Environment , to ask how the change could be effected .
 Derry, Mark H. Durkan, Northern Ireland
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Derry, Mark H. Durkan, Northern Ireland