15800
Westminster has four entries in the National Register of Historic Places : The District includes the following buildings :  Westminster  was the site of  Westminster Academy  incorporated in 1833 .
 city of headquarters: Westminster, Westminster Academy
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:  Westminster, Westminster Academy 
Answer:
 city of headquarters: Westminster, Westminster Academy