Complex sentence: San Alfonso's pool is 1,000 meters (3/5th mile) long, deep and covers an area of 7.7 hectare (19 acre), all while holding 250 million liters (66 million gallons) of water.
Split into simpler sentences: San Alfonso's pool is 1,000 meters (3/5th mile) long, deep. The pool covers an area of 7.7 hectares (19 acres) that holds 250 million liters (66 million gallons) of water.