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This paper proposes the Hierarchical Directed Acyclic Graph -LRB- HDAG -RRB- Kernel for structured natural language data .
 used for: Hierarchical Directed Acyclic Graph -LRB- HDAG -RRB- Kernel, structured natural language data
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:  Hierarchical Directed Acyclic Graph -LRB- HDAG -RRB- Kernel, structured natural language data 
Answer:
 used for: Hierarchical Directed Acyclic Graph -LRB- HDAG -RRB- Kernel, structured natural language data