2051
The  GCRTA  was established December 30 1974 and on September 5 1975 assumed control of the  Cleveland Transit System  ( a successor to the Cleveland Railway ) which operated the heavy rail line from Windermere to Cleveland Hopkins Airport and the local bus systems and Shaker Heights Rapid Transit ( the descendant of a separate streetcar system formed by the Van Sweringen brothers to serve their Shaker Heights development ) which operated the two interurban light rail lines from downtown to Shaker Heights .
 subsidiaries: GCRTA, Cleveland Transit System
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: 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} 
Answer:
 subsidiaries: GCRTA, Cleveland Transit System