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.

[EX Q]: Chicago's first railway opened in 1848. They are called Galena and Chicago Union Railroad as well as the Illinois and Michigan canal.
You're welcome.
Great. Any other info regarding history or infrastructure?
That sounds like a crazy idea! Thanks so much for your help today!
Chicago P.D. is my favorite! Had no idea it was in Chicago. Just kidding! Haha. What can you tell me about Chicago's infrastructure?
[EX A]: Chicago's first railway opened in 1848. They are called Galena and Chicago Union Railroad as well as the Illinois and Michigan canal.

[EX Q]: Its a group of remote Volcanic islands in the south Atlantic Ocean most of the land is uninhabited. there is only 275 population
Good to know. Are there any activities that take place on the islands?
Im sorry I dont have current information on the climate. heres an interesting fact, The Tristan Albatross is know to only breed on the Gough and Inaccessible Islands!
That's interesting, so how is the climate there?
I'd like to learn about Tristan da Cunha, what can you tell me about the geography?
[EX A]: Its a group of remote Volcanic islands in the south Atlantic Ocean most of the land is uninhabited. there is only 275 population

[EX Q]: They have Adelaide Street Circuit where they hold supercars event in Australia.
Hello, can you tell me what is the main economic activity in South Australia?
Is the Australian Open held in that state?
You're welcome!
Thanks! Do they produce any products or are they a service oriented economy?
[EX A]:
They have Adelaide Street Circuit where they hold supercars event in Australia.