What is the relationship between Mirvac 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.

Under the plan, co-owners Mirvac and the private Perron Group will add new fashion and food areas to cater for the growing number of residents in the area – from students at the University of Technology Sydney to the Central Park apartments.

Answer: headquarters_location