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The Brampton  Centennial Secondary School  shooting was a school shooting that occurred at Brampton Centennial Secondary School in Brampton  Ontario  Canada on May 28 1975 .
 state or province of headquarters: Centennial 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:
 state or province of headquarters: Centennial Secondary School, Ontario