Problem: Sumer:

They invented and developed arithmetic by using several different number systems including a mixed radix system with an alternating base 10 and base 6. This sexagesimal system became the standard number system in Sumer and Babylonia. They may have invented military formations and introduced the basic divisions between infantry, cavalry, and archers. They developed the first known codified legal and administrative systems, complete with courts, jails, and government records. The first true city-states arose in Sumer, roughly contemporaneously with similar entities in what are now Syria and Lebanon. Several centuries after the invention of cuneiform, the use of writing expanded beyond debt/payment certificates and inventory lists to be applied for the first time, about 2600 BC, to messages and mail delivery, history, legend, mathematics, astronomical records, and other pursuits. Conjointly with the spread of writing, the first formal schools were established, usually under the auspices of a city-state's primary temple.

In Sumerian society, who oversaw the operation of the first formal schools?
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A: a city-state's primary temple

Problem: Universal Studios:

In the 1950s, Universal-International resumed their series of Arabian Nights films, many starring Tony Curtis. The studio also had a success with monster and science fiction films produced by William Alland, with many directed by Jack Arnold. Other successes were the melodramas directed by Douglas Sirk and produced by Ross Hunter, although for film critics they were not so well thought of on first release as they have since become. Among Universal-International's stable of stars were Rock Hudson, Tony Curtis, Jeff Chandler, Audie Murphy, and John Gavin.

Who directed monster movies for Universal?
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A: Jack Arnold

Problem: Hellenistic period:

The Hellenistic period covers the period of ancient Greek (Hellenic) history and Mediterranean history between the death of Alexander the Great in 323 BC and the emergence of the Roman Empire as signified by the Battle of Actium in 31 BC and the subsequent conquest of Ptolemaic Egypt the following year. At this time, Greek cultural influence and power was at its peak in Europe, Africa and Asia, experiencing prosperity and progress in the arts, exploration, literature, theatre, architecture, music, mathematics, philosophy, and science. For example, competitive public games took place, ideas in biology, and popular entertainment in theaters. It is often considered a period of transition, sometimes even of decadence or degeneration, compared to the enlightenment of the Greek Classical era. The Hellenistic period saw the rise of New Comedy, Alexandrian poetry, the Septuagint and the philosophies of Stoicism and Epicureanism. Greek Science was advanced by the works of the mathematician Euclid and the polymath Archimedes. The religious sphere expanded to include new gods such as the Greco-Egyptian Serapis, eastern deities such as Attis and Cybele and the Greek adoption of Buddhism.

What period saw the rise of the Septuagint?
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A: Hellenistic

Problem: Sino-Tibetan relations during the Ming dynasty:

In 1358, the Sakya viceregal regime installed by the Mongols in Tibet was overthrown in a rebellion by the Phagmodru myriarch Tai Situ Changchub Gyaltsen (13021364). The Mongol Yuan court was forced to accept him as the new viceroy, and Changchub Gyaltsen and his successors, the Phagmodrupa Dynasty, gained de facto rule over Tibet.

Which dynasty became ruler of Tibet?
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A:
the Phagmodrupa Dynasty