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Automatic image annotation is a newly developed and promising technique to provide semantic image retrieval via text descriptions .
 used for: Automatic image annotation, semantic image retrieval; used for: text descriptions, semantic image retrieval
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
 Entity Pairs:  Automatic image annotation, semantic image retrieval; text descriptions, semantic image retrieval 
Answer:
 used for: Automatic image annotation, semantic image retrieval; used for: text descriptions, semantic image retrieval