Complex sentence: Berkhamsted is a small prosperous historic market town, in the Chiltern Hills, on the western edge of Hertfordshire in England, 26 miles (40 km) north-west of London, within the Metropolitan Green Belt.
Split into simpler sentences: Berkhamsted is a small, prosperous and historIc market town, in the Chiltern Hills, on the western edge of Hertfordshire in England. The town is 26 miles (40 km) north-west of London and within the Metropolitan Green Belt.