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.

Hello, I am interested in learning about Poland's Economy?
Hello. I'd love to help. Did you realize that the five biggest companies supplying Poland energy are PGE, Tauron, Enea, Energa, and Innogy.
Interesting!! I was not aware. Do you know when they started supplying energy to Poland?
Sorry, I don't know about that but I know they are a fast growing economy and one of the more resilient of the post-communist countries.
That's good to know about Poland's economy. Can you tell me about the geography of Poland?
Poland is located in Central Europe. Poland uses the Black Sea and the Baltic Sea as drainage.
I've never heard of the Black sea, what is that?
The best way to describe it is a sea that has rivers draining into it. Will you need more?
How long has it been around?
Sorry I dont know about that but I do know about the lakes created by activity in the Baltic Sea in Slowinki National Park. So it's unique that now there are more lakes.
Poland seems like a really cool place to visit.
There certainly rich in history and have undergone many governmental, military, and economic transitions.
Poland