3692
Tempe  Arizona-based  US Airways  Group Inc. withdrew its bid for Atlanta-based Delta Air Lines Inc. after Delta's official committee of unsecured creditors said it supports Delta's plan to emerge from bankruptcy protection in the spring as a standalone carrier thus rejected US Airways ' merger offer .
 city of headquarters: Tempe, US Airways
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: Tempe, US Airways