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Other large airports include Gatwick , Manchester , Stansted , Luton and Birmingham .
 Gatwick, Manchester, Stansted, Luton, Birmingham
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Gatwick, Manchester, Stansted, Luton, Birmingham