Complex sentence: Lovely Seat, originally known as Lunasett until being misnamed by map makers some time in the twentieth century, is a fell in the Yorkshire Dales National Park in North Yorkshire, England which reaches a height of 675 metres (2,215 feet).
Split into simpler sentences: Lovely Seat, originally known as Lunasett until being misnamed by map makers some time in the twentieth century, is a fell in the Yorkshire Dales National Park in North Yorkshire, England. It reaches a height of 675 metres (2,215 feet).