3210
The largest of said money changers at the time ( the late Sheikh Salem Bin Mahfouz ) eventually founded  Saudi Arabia  's first bank the  National Commercial Bank  ( NCB ) .
 country of headquarters: Saudi Arabia, National Commercial Bank
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:
 country of headquarters: Saudi Arabia, National Commercial Bank