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the dog clutch is a sliding selector mechanism which is splined to the output shaft , meaning that its hub has teeth that fit into slots ( splines ) on the shaft , forcing it to rotate with that shaft .
 component whole: hub, teeth
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: component whole, NA, instrument agency, member collection, cause effect, entity destination, content container, message topic, product producer, entity origin 
Text: {0} 
Answer:
 component whole: hub, teeth