Complex sentence: The Barrhead Branch was a branch line built by the Glasgow and South Western Railway in Scotland, connected Potterhill railway station on the south side of Paisley with a new Barrhead Central railway station.
Split into simpler sentences: The Barrhead Branch was a branch line built by the Glasgow and South Western Railway in Scotland. It connected Potterhill railway station on the south side of Paisley with a new Barrhead Central railway station.