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We show how research in generation can be adapted to dialog systems , and how the high cost of hand-crafting knowledge-based generation systems can be overcome by employing machine learning techniques .
 used for: generation, dialog systems; used for: machine learning techniques, hand-crafting knowledge-based generation systems
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:  generation, dialog systems; machine learning techniques, hand-crafting knowledge-based generation systems 
Answer:
 used for: generation, dialog systems; used for: machine learning techniques, hand-crafting knowledge-based generation systems