Complex sentence: The "Ulster Banner" was the official name given to the Flag of the Former Government of Northern Ireland between 1953 and 1972, which is still used to represent Northern Ireland in sporting events in which Northern Ireland compete.
Split into simpler sentences: The "Ulster Banner" is the official name given to the Flag of the Former Government of Northern Ireland between 1953 and 1972. It is still used to represent Northern Ireland in sporting events in which Northern Ireland compete.