What is the tallest mountain in the world?
user
Hmm... for my human friends: You might find that the term you’re looking for here is “elevation”, or “vertical distance”.  I hear that there are some very tall mountains.  One of the tallest is Mount Everest, which has an elevation of 8,850 meters above sea level.
assistant
What is the tallest mountain in the world?
user
Hmmm, how would I figure that out?
assistant
What is the tallest mountain in the world?