Complex sentence: The Modern South Arabian or Eastern South Semitic, Eastern South Arabian languages are spoken mainly by minority populations in the Arabian Peninsula in Yemen and Oman, which, together with the modern Ethiopian Semitic languages, form the South Semitic branch.
Split into simpler sentences: The Modern South Arabian or Eastern South Semitic, Eastern South Arabian languages are spoken mainly by small populations inhabiting the Arabian Peninsula, in Yemen and Oman. Together with the modern Ethiopian Semitic languages, they form the South Semitic sub-phylum of the Afro-Asiatic family's Semitic branch.