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His role in the clash between Senator Joseph R. McCarthy and presidential candidate Dwight D. Eisenhower in 1952 has interested historians for decades .
 Dwight D. Eisenhower
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Dwight D. Eisenhower