Complex sentence: Sanlucar de Barrameda is located on the Atlantic coast of the autonomous community of Andalusia, in the province of Cadiz, specifically on the left side of the mouth of the Guadalquivir River, which separates the provinces of Huelva and Seville.
Split into simpler sentences: Sanlucar de Barrameda is located on the Atlantic coast of the autonomous community of Andalusia, in the province of Cadiz. Specifically on the left side of the mouth of the Guadalquivir River, which separates the provinces of Huelva and Seville.