5515
it was sean who first spun the cylinder of the revolver , put the eight-inch barrel to his head and pulled the trigger .
 component whole: cylinder, revolver
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:  cylinder, revolver 
Answer:
 component whole: cylinder, revolver