In this task, you are given a dialogue between a user and an assistant, where users and assistants converse about geographic topics like geopolitical entities and locations. The task here is to find if the dialogue is by the user or assistant. Classify your answers into user and assistant.
Q: I believe the dispute is by product of previous disputes regarding Sudan and its neighbor Egypt. This started mostly in 1821 when the Ottoman ruler of Egypt and invaded and conquered Northern Sudan. Then Hussein Kamel was declared Sultan of Egypt and Sudan.
A:
assistant