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The continued relevance of industrial nationalisation ( a centrepiece of the post-War Labour government 's programme ) had been a key point of contention in Labour 's internal struggles of the 1950 s and early 1960 s .
 Labour, Labour
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Labour, Labour