Complex sentence: It has been the center of culture in St Albans since the 1970s and has staged concerts by bands such as Dire Straits in 1978 and Jethro Tull in 2010.
Split into simpler sentences: It has been the centre of culture in St Albans since the 1970s. Alban Arena has staged concerts by bands such as Dire Straits in 1978 and Jethro Tull in 2010.