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For mobile speech application , speaker DOA estimation accuracy , interference robustness and compact physical size are three key factors .
 speaker DOA estimation accuracy, mobile speech application; speaker DOA estimation accuracy, interference robustness; interference robustness, mobile speech application; interference robustness, compact physical size; compact physical size, mobile speech application
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:
 speaker DOA estimation accuracy, mobile speech application; speaker DOA estimation accuracy, interference robustness; interference robustness, mobile speech application; interference robustness, compact physical size; compact physical size, mobile speech application