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In 1927 , he became Private Secretary to the then Secretary of State for India , F.E. Smith , Lord Birkenhead , the great friend of Sir Winston Churchill .
 person: F.E. Smith , Lord Birkenhead; person: Winston Churchill
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: F.E. Smith , Lord Birkenhead; person: Winston Churchill