Complex sentence: The Leckwith Stadium is also well known as Cardiff's Athletic Stadium and it has athletic facilities and also football facilities therefore Cardiff Grange Quin's of the Welsh Premier and Cardiff City F.C. reserves use the available facilities.
Split into simpler sentences: The Leckwith Stadium is also well known as Cardiff's Athletic Stadium and it has athletic facilities and also football facilities. The Cardiff Grange Quin's of the Welsh Premier League and the Cardiff City F.C. reserve team use the available facilities.