What is the relationship between Statistics Canada and OTTAWA in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

OTTAWA Aug 21 (Reuters) - Canadian retail sales rose more than expected in June, on higher gasoline prices and increased sales of electronics and appliances, data from Statistics Canada showed on Friday.

Answer: headquarters_location