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A novel bootstrapping approach to Named Entity -LRB- NE -RRB- tagging using concept-based seeds and successive learners is presented .
 used for: bootstrapping approach, Named Entity -LRB- NE -RRB- tagging; used for: concept-based seeds, bootstrapping approach; conjunction: concept-based seeds, successive learners; used for: successive learners, bootstrapping approach
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:  bootstrapping approach, Named Entity -LRB- NE -RRB- tagging; concept-based seeds, bootstrapping approach; concept-based seeds, successive learners; successive learners, bootstrapping approach 
Answer:
 used for: bootstrapping approach, Named Entity -LRB- NE -RRB- tagging; used for: concept-based seeds, bootstrapping approach; conjunction: concept-based seeds, successive learners; used for: successive learners, bootstrapping approach