Complex sentence: Back in Cloisterham, the gravedigger Durdles and his Deputy enter to discuss a newly completed-tomb for the wife of Mayor Thomas Sapsea, but the actor playing Sapsea is too drunk to perform, so the Chairman himself takes over the role.
Split into simpler sentences: Back in Cloisterham, the gravedigger Durdles and his Deputy enter to discuss a newly completed tomb for the wife of Mayor Thomas Sapsea. It is announced that the actor playing Sapsea is too drunk to perform, so the Chairman himself takes over the role.