5484
fig . 3 is a fragmentary cross-section taken substantially along the line 3 -- 3 of fig . 2 and shows the flapper of the closure in its closed position .
 flapper, closure
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 flapper, closure