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He was a representative peer in the House of Lords from 1913 – 1950 and an Ulster Unionist member of the Senate of Northern Ireland from 1921 until his death in 1950 .
 House of Lords, Ulster Unionist
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 House of Lords, Ulster Unionist