Complex sentence: Exmoor is loosely defined as an area of hilly open moorland in west Somerset and north Devon in South West England, named after the River Exe, the source of which is situated in the centre of the area, two miles north-west of Simonsbath.
Split into simpler sentences: Exmoor is loosely defined as an area of hilly open moorland in west Somerset and north Devon in South West England. It is named after the River Exe, the source of which is situated in the centre of the area, two miles north-west of Simonsbath.