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Swindon  's second oldest operator after Thamesdown Transport is  Stagecoach in Swindon  the successor to the Swindon branch of Bristol Tramways established in 1921 .
 subsidiaries: Swindon, Stagecoach in Swindon
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
 Entity Pairs:  Swindon, Stagecoach in Swindon 
Answer:
 subsidiaries: Swindon, Stagecoach in Swindon