Conversation so far:
what is the capital of the country saudi arabia
Riyadh is the capital of Saudi Arabia.
what is the tallest building in riyadh
Public Investment Fund Tower is the tallest building in Riyadh.
how tall is the public investment fund tower
The Public Investment Fund Tower is a 385 m skyscraper in Riyadh, Saudi Arabia.

Question: what is the city's elevation
Self-contained rewrite: what is riyadh's elevation