Take context from the input text and decide on the accurate relationship between 'AMP Capital' and 'Sydney' from the options provided.
Options: subsidiary, headquarters location, director/manager, currency

AMP Capital managing director office and industrial Louise Mason said the landmark Quay Quarter Sydney project was a "further demonstration of AMP Capital's long-term commitment to Circular Quay", where it built Australia's first skyscraper and where the company has been located for more than 50 years.
headquarters location