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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 .
 person: Ed Miliband
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 person: Ed Miliband