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.

Well, the geography of Greater Iran, a vast area covering present-day Iran, the Caucasus, Anatolia, Mesopotamia and Central Asia, with it's high mountain ranges, plays the main role in much Iranian mythology. 
 Youre welcome, have a good night 
 Great! Thank you very much. 
 Interesting. I've never heard of the p5+1 deal. What is that? 
 Wow! That does sound like the worst! What type of religion does Iran have?
Well, the geography of Greater Iran, a vast area covering present-day Iran, the Caucasus, Anatolia, Mesopotamia and Central Asia, with it's high mountain ranges, plays the main role in much Iranian mythology.