4605
`` To explain complex phenomena , an explanation system must be able to select information from a formal representation of domain knowledge , organize the selected information into multisentential discourse plans , and realize the discourse plans in text .
 used for: explanation system, discourse plans
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: explanation system, discourse plans