Where is the biggest river on earth
user
You could consider several types of rivers, or perhaps parts of the same river, that you might be asking about.  You might be asking about the Amazon River, which is in South America and is the second-longest river on Earth, but you could also be asking about the Congo River in Africa.  They both flow from the Amazon River basin in South America to the Atlantic Ocean.  They are both more than 4,000 miles long.
assistant
Which is the deepest one?
user
According to the Guinness World Records, the deepest is the Mariana Trench in the Pacific Ocean.  The deepest river on land is the Zambezi River in Africa, which flows through two gorges and is up to 1.5 miles deep.  However, that river flows only seasonally and can only be a true river at certain times of the year.
assistant
How long is the zambezi?
user
You asked about the Zambezi River, which flows into the Indian Ocean, and which also flows through two gorges.  You said you were interested in the length, but I’d like to add more detail.  The river is up to 1,800 miles long, and drains an area of 11,000,000 square miles.  Its length makes it the fourth-longest river in Africa.
assistant
Where is the biggest river on earth
user
You could consider several types of rivers, or perhaps parts of the same river, that you might be asking about.  You might be asking about the Amazon River, which is in South America and is the second-longest river on Earth, but you could also be asking about the Congo River in Africa.  They both flow from the Amazon River basin in South America to the Atlantic Ocean.  They are both more than 4,000 miles long.
assistant
Which is the deepest one?
user
According to the Guinness World Records, the deepest is the Mariana Trench in the Pacific Ocean.  The deepest river on land is the Zambezi River in Africa, which flows through two gorges and is up to 1.5 miles deep.  However, that river flows only seasonally and can only be a true river at certain times of the year.
assistant
How long is the zambezi?
user
The length of the Zambezi river is 2,700 miles.  It runs across parts of Zambia, Zimbabwe, and Mozambique.  The Zambezi river has a unique trait in that it flows two different ways, or has two major branches.  One branch flows northwards, but as soon as it flows into the Indian Ocean, it changes direction and flows back southwards, and eventually, it rejoins the other branch of the river.  In this way, the
assistant
Where is the biggest river on earth