Information: - Amar-Sin (initially misread as Bur-Sin) (ca. 19811973 BCE short chronology) was the third ruler of the Ur III Dynasty. He succeeded his father Shulgi (ca. 20291982 BCE).His name translates to 'immortal moon-god'. - Shu - sin was king of Sumer and Akkad , and was the penultimate king of the Ur III dynasty . He succeeded his brother Amar - Sin , and reigned c. 1972 - 1964 BC. ( short chronology ) Following an open revolt of his Amorite subjects , he directed the construction of a fortified wall between the Euphrates and the Tigris rivers in his fourth year , intending it to hold off any further Amorite attacks . He was succeeded by his son Ibbi - Sin . - Sumer was the first urban civilization in the historical region of southern Mesopotamia, modern-day southern Iraq, during the Chalcolithic and Early Bronze ages, and arguably the first civilization in the world with Ancient Egypt and the Indus Valley. Living along the valleys of the Tigris and Euphrates, Sumerian farmers were able to grow an abundance of grain and other crops, the surplus of which enabled them to settle in one place. - Shulgi (Sulgi, formerly read as Dungi) of Ur was the second king of the "Sumerian Renaissance" in the Third Dynasty of Ur. He reigned for 48years, from c. 2029 BC 1982 BC (short chronology). His accomplishments include the completion of construction of the Great Ziggurat of Ur which was started by his father Ur-Nammu. - The Tigris is the eastern member of the two great rivers that define Mesopotamia, the other being the Euphrates. The river flows south from the mountains of southeastern Turkey through Iraq and empties itself into the Persian Gulf. - The Euphrates (Sumerian: : "Buranuna", : "Purattu", : "al-Furt", : "Prt", : "Yeprat", : "Perat", ) is the longest and one of the most historically important rivers of Western Asia. Together with the Tigris, it is one of the two defining rivers of Mesopotamia. Originating in eastern Turkey, the Euphrates flows through Syria and Iraq to join the Tigris in the Shatt al-Arab, which empties into the Persian Gulf. - Iraq (, or ; '; '), officially known as the Republic of Iraq ('; ') is a country in Western Asia, bordered by Turkey to the north, Iran to the east, Kuwait to the southeast, Saudi Arabia to the south, Jordan to the southwest, and Syria to the west. The capital, and largest city, is Baghdad. The main ethnic groups are Arabs and Kurds; others include Assyrians, Turkmen, Shabakis, Yazidis, Armenians, Mandeans, Circassians, and Kawliya. Around 95% of the country's 36 million citizens are Muslims, with Christianity, Yarsan, Yezidism, and Mandeanism also present. The official languages of Iraq are Arabic and Kurdish. What is the relationship between 'shu-sin' and 'shulgi'?
A:
father