Given the task definition and input, reply with output. In this task, the input is a set of dialogues between a user and an assistant. You need to find the dialogue that is basically a response given to a question or an aspect of the user.

I don't have that information, my apologies. I can tell you that it's home to one of China's largest aquariums, the Shanghai Ocean Aquarium.
Neat! What can you tell me about its geography?
Sure! Shanghai is the biggest city in China and one of the world's largest cities. It is so big and so important that it is a special province-level city like Beijing, Tianjin, and Chongqing. Right now, it is the biggest port in the world.
Hello! Would you mind helping me learn about Shanghai this evening?
Would you mind sharing something about the history before we close?
Sure! Shanghai is the biggest city in China and one of the world's largest cities. It is so big and so important that it is a special province-level city like Beijing, Tianjin, and Chongqing. Right now, it is the biggest port in the world.