13937
Both South  Medford  and  North Medford High School  share the stadium for football .
 city of headquarters: Medford, North Medford High School
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Medford, North Medford High School 
Answer:
 city of headquarters: Medford, North Medford High School