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Trade unionism In London she became secretary to Emilia , Lady Dilke , who was a leader of the Women 's Trade Union League , an organisation of which Tennant became treasurer .
 Emilia , Lady Dilke, Tennant
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Emilia , Lady Dilke, Tennant