Complex sentence: The Garda CSB is based at Garda Headquarters in the Phoenix Park, Dublin, it is headed by the Assistant Commissioner in charge of Crime and Security, and is staffed mainly by senior officers and intelligence analysts (but few detectives).
Split into simpler sentences: The Garda CSB is based at Garda Headquarters in the Phoenix Park, Dublin. It is headed by the Assistant Commissioner in charge of Crime and Security, and is staffed mainly by senior officers and intelligence analysts (but few detectives).