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Motivated by the successful use of convolutional neural networks -LRB- CNNs -RRB- for many natural language processing tasks , in this paper , we adopt CNNs to perform the hashtag recommendation problem .
 used for: convolutional neural networks -LRB- CNNs -RRB-, natural language processing tasks
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:  convolutional neural networks -LRB- CNNs -RRB-, natural language processing tasks 
Answer:
 used for: convolutional neural networks -LRB- CNNs -RRB-, natural language processing tasks