3612
The size of the crowd forced  TriMet  the public agency that operates mass transit throughout the Portland metropolitan area to temporarily halt operation of the Green and Yellow  MAX Light Rail  lines along the Portland Transit Mall .
 subsidiaries: TriMet, MAX Light Rail
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: TriMet, MAX Light Rail