Complex sentence: Safaitic is the name given to an ancient and extinct South Central Semitic (Arabic) dialect, preserved in the form of inscriptions which are written in a type of South Semitic script.
Split into simpler sentences: Safaitic is the name given to the scrtipt of a group of inscriptions in an ancient and extinct South Central Semitic (Arabic) dialect. The inscriptions are written in a type of South Semitic script.