-What's the biggest city in Australia?
-What's the controlling language in Sydney?
-What's the most famous building in Sydney?
-Where is the most cosmopolitan city in Australia?
-Is Sydney the biggest demographic density area?
-What are the name of residents in Sydney?
-Where are the most famous suburbs in Sydney?
-Is Sydney the olddest city in Australia?
-What are the most important symbols in Sydney?
-When is the better season to visit Sydney?