Complex sentence: The Autódromo do Estoril (officially: Autódromo Fernanda Pires da Silva) is a 4.36 km (2.709 miles) race course in Portugal, and the home of the Formula One Portuguese Grand Prix from 1984 to 1996.
Split into simpler sentences: The Autódromo do Estoril (officially, "Autódromo Fernanda Pires da Silva") is a 4.36-km (2.709-mile) race course in Portugal. It was the home of the Formula One Portuguese Grand Prix from 1984 to 1996.