Complex sentence: The AON Chase is a Grade 2 National Hunt chase in the United Kingdom for five-year-old and above horses run over a distance of 3 miles (4,828 metres) at Newbury Racecourse in February.
Split into simpler sentences: The AON Chase is a Grade 2 National Hunt chase in the United Kingdom for five-year-old and above horses. It is run over a distance of 3 miles (4,828 metres) at Newbury Racecourse in February.