970
The objective is a generic system of tools , including a core English lexicon , grammar , and concept representations , for building natural language processing -LRB- NLP -RRB- systems for text understanding .
 used for: system, natural language processing -LRB- NLP -RRB- systems; part of: core English lexicon, system; part of: grammar, system; part of: concept representations, system; used for: natural language processing -LRB- NLP -RRB- systems, text understanding
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:  system, natural language processing -LRB- NLP -RRB- systems; core English lexicon, system; grammar, system; concept representations, system; natural language processing -LRB- NLP -RRB- systems, text understanding 
Answer:
 used for: system, natural language processing -LRB- NLP -RRB- systems; part of: core English lexicon, system; part of: grammar, system; part of: concept representations, system; used for: natural language processing -LRB- NLP -RRB- systems, text understanding