Complex sentence: The Ascot Chase is a Grade 1 National Hunt chase in the United Kingdom for five-year-old and above horses run over a distance of 2 miles 3½ furlongs (3,923 metres) at Ascot Racecourse in February.
Split into simpler sentences: The Ascot Chase is a Grade 1 National Hunt chase in the United Kingdom for five-year-old and above horses. It is run over a distance of 2 miles 3½ furlongs (3,923 metres) at Ascot Racecourse in February.