What's the name of the airport in Sidney?
What's the most expensive city of Australia?
What's the climate of Sidney?
What's the hottest month in Sidney?
What's the population in Sidney?
What's the most popular sport in Sidney?
What are the most important newspaper in Sidney?
What's the mayor of Sidney?
What's the coldest month in Sidney?
When was the Sidney Harbour Bridge built?
What's the oldest university of Australia?