What is the relationship between Aussie and Sydney 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.

PT1M48S 620 349 Autoplay On Off Video feedback Video settings Sydney and Melbourne real estate not off the bubble yet Arise Steve Keen, forecaster of the year Aussie dollar at fair value, say economists China stock market crash worse than a Grexit First, the good news.

Answer: headquarters_location