40 S 140 W is the South Pacific Ocean.
South Pacific Ocean
The coordinates 20 degrees South and 140 degrees West lands somewhere between the islands of French Polynesia. The islands of French Polynesia are in the South Pacific Ocean.
That point is in the Pacific Ocean, roughly midway between South America and Australia
A location at 20 degrees south and 140 degrees east falls in the Pacific Ocean, southeast of Australia and northeast of New Zealand. It is in an area known for its remote and uninhabited islands.
A lot of water. This is a spot in the Southern/Antarctic Ocean about 2000 miles south of Melbourne, Australia.
None - you're in the South Pacific Ocean between French Polynesia and the Pitcairn Islands.
Australia is at 20 degrees south and 140 degrees east.
Asia
That's a spot in the French Polynesia neighborhood of the south Pacific Ocean, roughly 140 miles northwest of Papeete, Tahiti.
There is no country at the coordinates 80 degrees south latitude and 140 degrees west longitude. It is a point on the continent of Antarctica.
Azimuth 140 degrees (true) is 40 degrees east of south, or pretty close to southeast.(Southeast is exactly 135 degrees true.)
Since you did not specify the direction of longitude, the country located at 20 degrees south latitude and 140 degrees east longitude is Australia, while the country located at 20 degrees south latitude and 140 degrees west longitude is France. The location is French Polynesia, which is a French territory.