Complex sentence: The Oaks d'Italia is a Group 2 flat horse race in Italy for three-year-old thoroughbred fillies run over a distance of 2,200 metres (approximately 1 mile 3 furlongs) at the San Siro Racecourse, Milan in mid June.
Split into simpler sentences: The Oaks d'Italia is a Group 2 flat horse race in Italy for three-year-old thoroughbred fillies. It is run over a distance of 2,200 metres (approximately 1 mile 3 furlongs) at the San Siro Racecourse, Milan in mid June.