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We present an efficient algorithm for chart-based phrase structure parsing of natural language that is tailored to the problem of extracting specific information from unrestricted texts where many of the words are unknown and much of the text is irrelevant to the task .
 used for: algorithm, chart-based phrase structure parsing; used for: natural language, chart-based phrase structure parsing
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 used for: algorithm, chart-based phrase structure parsing; used for: natural language, chart-based phrase structure parsing