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By using commands or rules which are defined to facilitate the construction of format expected or some mathematical expressions , elaborate and pretty documents can be successfully obtained .
 conjunction: commands, rules; used for: commands, mathematical expressions; used for: rules, mathematical expressions
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:  commands, rules; commands, mathematical expressions; rules, mathematical expressions 
Answer:
 conjunction: commands, rules; used for: commands, mathematical expressions; used for: rules, mathematical expressions