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Initial clusters capture the global data structure and finer clusters at the later stages capture the subtle class differences not visible at the global scale .
 Initial clusters, global data structure; finer clusters, subtle class differences
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 Initial clusters, global data structure; finer clusters, subtle class differences