The term 'POLO SETTING' can be solved by the four-letter word 'ASIA'. ASIA is the world's largest and most populous continent, located primarily in the Eastern and Northern Hemispheres. It covers 8.7% of the Earth's total surface area and comprises 30% of its land area. It is home to 60% of the world's population, with a total of 4.5 billion people living in 44 countries. Polo is a sport that originated in Central ASIA and is now popular in many countries across the continent. The game is played on horseback and involves two teams of four players each, who use long-handled mallets to hit a small wooden ball into the opposing team's goal. As such, ASIA is an ideal setting for the sport of polo.