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.
Example: Hi. I want information about Namibia. 
 Nmbia is a country in southern Africa. 
 Do you have information about the media there? 
 What about it? 
 Interesting! What can you tell me about the politics and government?
Example solution: Nmbia is a country in southern Africa.
Example explanation: This is a good example. The output is the response to the question asked by the user.

Problem: Are there any interesting geographical features in the country? 
 It is the 7th largest country in Africa. It is the 23rd largest country in the world, twice the size of France or of Texas. 
 Hi, I'd like to learn about Angola. 
 Oh, that's pretty big! What can you tell me about its history? 
 You are very welcome.

Solution: It is the 7th largest country in Africa. It is the 23rd largest country in the world, twice the size of France or of Texas.