Given the task definition and input, reply with output. In this task, you are given dialogue, and you have to find the most critical location in the given conversation.

I'd like to learn about the geography of Sydney
Hello! Did you know that Sydney has a large harbor and many beaches. The most famous beach being Bondi Beach. Some other famous beaches include both Coogee Beach and Manly Beach.
Wow, that is impressive! Does this means that the climate in Sydney has warm summers?
Unfortunately I do not have any information on Sydney's climate, but I can tell you that the Northern Beaches area including Manly Beach is one of Sydney's most popular holiday destinations.
Wow, why is these beach a popular tourist site?
I do not have that information, however, I can tell you that the Northern Beaches area extends south to the entrance of Port Jackson, west to Middle Harbour, and north to the entrance of Broken Bay.
I love architecture, what can you tell me about the city's urban structure?
The most famous sports ground in Sydney is ANZ Stadium, which used to be called "Stadium Australia" because it was built for the 2000 Summer Olympics.
Is this stadium still being used for sports events?
Yes! The high capacity Stadium Australia is used for rugby, soccer, and Australian rules football.
Tell me more about urban structure.
Absolutely, did you know that the Sydney Tower is the tallest structure in Sydney designed by Donald Crone and completed in 1981
I did not know that. There is a lot of interesting sceneries in Sydney. Thank you.
You're welcome, happy to help.
Sydney