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In 1948 , the American born ( British by marriage ) jazz vocalist Adelaide Hall appeared in a British movie filmed in London called A World is Turning , intended to highlight the contribution of black men and women to British society at a time when they were struggling for visibility on our screens .
 Adelaide Hall
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Adelaide Hall