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There are several approaches that model information extraction as a token classification task , using various tagging strategies to combine multiple tokens .
 approaches, information extraction; information extraction, token classification task; tagging strategies, token classification task
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 approaches, information extraction; information extraction, token classification task; tagging strategies, token classification task