Complex sentence: Plas Coch played an important part in the social life of the town, hosting the Denbighshire & Flintshire Agricultural Society Show and the Annual Wrexham Lager Festival.
Split into simpler sentences: Plas Coch played an important part in the social life of the town. It held the Denbighshire & Flintshire Agricultural Society Show and the Annual Wrexham Lager Festival.