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She publicly opposed the proposed free trade agreement of the European Economic Community in 1973 , by signing a petition along with 500 other prominent social democrats and socialists .
 organization: European Economic Community
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:
 organization: European Economic Community