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St. Thomas Aquinas Catholic Secondary School  ( STA ) is a Catholic secondary school in London  Ontario  located in the neighbourhood of Oakridge in the west end of the city .
 city of headquarters: St. Thomas Aquinas Catholic Secondary School, Ontario
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: St. Thomas Aquinas Catholic Secondary School, Ontario