5631
additionally , and particularly in the case of injured or weak knees , means must be provided in the hinge of the knee brace to control the extension of the knee joint and to stop the extension .
 component whole: hinge, knee brace
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  hinge, knee brace 
Answer:
 component whole: hinge, knee brace