context: The Caspian Sea is a closed sea located in western Asia on an area of ​​371,000 square kilometers and is the largest closed sea in the world. The length of the Caspian Sea is 1,200 kilometers with a width of 300 kilometers, and its maximum depth is 1023 m And overlooks the Caspian Sea, five countries are Russia, Iran, Azerbaijan, Turkmenistan and Kazakhstan.
question: How deep is the Caspian Sea?
answers.text: 1023 m