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She was one of 16 signatories of an open letter to Ed Miliband in January 2015 calling on the party to commit to oppose further austerity , take rail franchises back into public ownership and strengthen collective bargaining arrangements .
 Ed Miliband
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ed Miliband