Complex sentence: He or she is in charge of the Department of Finance ("An Roinn Airgeadais "), often refered to colloquially as the"Irish Exchequer", responsible for all financial matters in the Republic of Ireland.
Split into simpler sentences: He or she is in charge of the Department of Finance ("An Roinn Airgeadais ") often refered to colloquially as the"Irish Exchequer". The Minister is responsible for all financial matters in the Republic of Ireland.