2397
The  Clayton County   C-TRAN  was a bus transportation system in Clayton County Georgia that ran from 2001 to 2010 .
 city of headquarters: Clayton County, C-TRAN
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:
 city of headquarters: Clayton County, C-TRAN