context: The Caspian Sea is a closed sea located in West 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 a maximum depth of 1023 meters And overlooks the Caspian Sea, five countries are Russia, Iran, Azerbaijan, Turkmenistan and Kazakhstan.
question: Where is the Caspian Sea located?
answers.text: West Asia