Where is the Nile river?  Is it the longest river in the world? 
human
Here’s what I know: the Nile is the longest river on the continent of Africa.  I’m afraid I don’t know which continent has the longest river overall. 
assistant
In which country is it located? 
human
It runs through several countries, including Egypt.  Egypt, the Sudan, and the Democratic Republic of the Congo. 
assistant
Do people use it to travel by boat between countries such as Egypt, Sudan, etc.? 
human
Yes, people can travel by boat down the Nile between Egypt, the Sudan, and the Democratic Republic of the Congo, amongst other countries.
assistant
Where is the Nile river?  Is it the longest river in the world? 
human
Here’s what I know: the Nile is the longest river on the continent of Africa.  I’m afraid I don’t know which continent has the longest river overall. 
assistant
In which country is it located? 
human
It runs through several countries, including Egypt.  Egypt, the Sudan, and the Democratic Republic of the Congo. 
assistant
Do people use it to travel by boat between countries such as Egypt, Sudan, etc.? 
human
People don’t generally use the Nile as a means of transportation.  It isn’t easy to navigate, and there are lots of rocks that would damage a boat.  Maybe it is used in places where the river flows more easily.
assistant