5960
Oak Park and River Forest High School  or OPRF is a public four-year high school located in  Oak Park  Illinois a western suburb of Chicago Illinois in the United States .
 city of headquarters: Oak Park and River Forest High School, Oak Park
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: Oak Park and River Forest High School, Oak Park