13725
Huntington was one of the banks attempting alongside Fifth Third Bank to acquire the National City branches in the  Pittsburgh  region that the United States Department of Justice ordered sold when  PNC Financial Services  acquired National City .
 city of headquarters: Pittsburgh, PNC Financial Services
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: Pittsburgh, PNC Financial Services