2189
US Airways Group operate  US  Airways along with its subsidiaries  PSA Airlines  Inc. and Piedmont Airlines Inc. which are wholly owned but marketed under the branding of US Airways Express .
 subsidiaries: US, PSA Airlines
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: US, PSA Airlines