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This study establishes the equivalence between the standard use of BLEU in word n-grams and its application at the character level .
 BLEU, word n-grams; BLEU, character level; word n-grams, character level
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:
 BLEU, word n-grams; BLEU, character level; word n-grams, character level