1697
Unification is often the appropriate method for expressing relations between representations in the form of feature structures ; however , there are circumstances in which a different approach is desirable .
 method, relations between representations; feature structures, relations between representations; approach, method
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:
 method, relations between representations; feature structures, relations between representations; approach, method