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Machine reading is a relatively new field that features computer programs designed to read flowing text and extract fact assertions expressed by the narrative content .
 used for: computer programs, flowing text; used for: computer programs, fact assertions; feature of: fact assertions, narrative content
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:  computer programs, flowing text; computer programs, fact assertions; fact assertions, narrative content 
Answer:
 used for: computer programs, flowing text; used for: computer programs, fact assertions; feature of: fact assertions, narrative content