In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.

[EX Q]: Passage: Although weakened and pushed south beyond the Huai River, the Southern Song found new ways to bolster its strong economy and defend itself against the Jin dynasty. It had able military officers such as Yue Fei and Han Shizhong. The government sponsored massive shipbuilding and harbor improvement projects, and the construction of beacons and seaport warehouses to support maritime trade abroad, including at the major international seaports, such as Quanzhou, Guangzhou, and Xiamen, that were sustaining China's commerce.To protect and support the multitude of ships sailing for maritime interests into the waters of the East China Sea and Yellow Sea (to Korea and Japan), Southeast Asia, the Indian Ocean, and the Red Sea, it was necessary to establish an official standing navy. The Song dynasty therefore established China's first permanent navy in 1132, with a headquarters at Dinghai. With a permanent navy, the Song were prepared to face the naval forces of the Jin on the Yangtze River in 1161, in the Battle of Tangdao and the Battle of Caishi. During these battles the Song navy employed swift paddle wheel driven naval vessels armed with traction trebuchet catapults aboard the decks that launched gunpowder bombs. Although the Jin forces commanded by Wanyan Liang (the Prince of Hailing) boasted 70,000 men on 600 warships, and the Song forces only 3,000 men on 120 warships, the Song dynasty forces were victorious in both battles due to the destructive power of the bombs and the rapid assaults by paddle wheel ships. The strength of the navy was heavily emphasized after that. A century after the navy was founded it had grown in size to 52,000 fighting marines.
The Song government confiscated portions of land owned by the landed gentry in order to raise revenue for these projects, an act which caused dissension and loss of loyalty amongst leading members of Song society but did not stop the Song's defensive preparations. Financial matters were made worse by the fact that many wealthy, land-owning familiessome of which had officials working for the governmentused their social connections with those in office in order to obtain tax-exempt status.Although the Song dynasty was able to hold back the Jin, a new foe came to power over the steppe, deserts, and plains north of the Jin dynasty. The Mongols, led by Genghis Khan (r. 12061227), initially invaded the Jin dynasty in 1205 and 1209, engaging in large raids across its borders, and in 1211 an enormous Mongol army was assembled to invade the Jin. The Jin dynasty was forced to submit and pay tribute to the Mongols as vassals; when the Jin suddenly moved their capital city from Beijing to Kaifeng, the Mongols saw this as a revolt. Under the leadership of Ogedei Khan (r.12291241), both the Jin dynasty and Western Xia dynasty were conquered by Mongol forces. The Mongols also invaded Korea, the Abbasid Caliphate of the Middle East and the Kievan Rus'.
Question: What is the full name of the dynasty whose government sponsored major international seaports that were sustaining China's commerce?
[EX A]: Southern Song.

[EX Q]: Passage: The attribution of the panel reflects the progression and trends of 19th and 20th-century scholarship on Early Netherlandish art. It is now thought to have been completed c. 143840, but there are still arguments for dates as early as 142429. As with the pages ascribed to Hand G in the Turin-Milan Hours manuscript, the panel was attributed to Jan's brother Hubert van Eyck in the 1875 Gemaldegalerie catalogue, and by a 1911 claim by art historian Georges Hulin de Loo. This is no longer considered credible and Hubert, today, is credited with very few works. By 1912 the painting had been definitively attributed to Jan in the museum catalogue.Attempts to date it have undergone similar shifts of opinion. In the 19th century the panel was believed to be an early work by Jan completed as early as c. 1410, although this view changed as scholarship progressed. In the early 20th century, Ludwig von Baldass placed it around 142429, then for a long period it was seen as originating from the early 1430s. Erwin Panofsky provided the first detailed treatise on the work and placed it around 143234. However, following research from Meyer Schapiro, he revised his opinion to the late 1430s in the 1953 edition of his Early Netherlandish Painting. A 1970s comparative study of van Eyck's 1437 Saint Barbara concluded that Madonna in the Church was completed after c. 1437. In the 1990s, Otto Pacht judged the work as probably a late van Eyck, given the similar treatment of an interior in the 1434 Arnolfini Portrait. In the early 21st century, Jeffrey Chipps Smith and John Oliver Hand placed it between 1426 and 1428, claiming it as perhaps the earliest extant signed work confirmed as by Jan.
Question: What is the full name of the person who is credited with very few works?
[EX A]: Hubert van Eyck.

[EX Q]: Passage: Lucille, a crippled man who is in a wheelchair from injuries sustained in the Gulf War, searches New Orleans for his friend Melvin so a documentary crew can follow Melvin. They find him passed out on the street. Melvin, an alcoholic and drug abuser, is in a downward spiral and spends most of his time partying with his friends. His estranged ex-wife, Doreen, has filed a restraining order against him and taken sole custody of their young son, Rex. Lucille wants Melvin to clean up and get sober, but Melvin only makes empty promises to eventually get his life together.
Lucas, a science teacher at the local community college, performs regular tests on Melvin, who has telekinetic powers the ability to move objects with his mind. Lucas can not explain this except that Melvin has a slightly different brain structure than ordinary people. Melvin will not see a specialist despite Lucas' urging. Besides Lucas' tests, Melvin uses his powers to perform street shows for drug money. Lucille, however, blames the local drug dealer, Nathan, of being behind violence in the neighborhood and does not like him. This is echoed by Jimmy, a local cop.
After a night of hard partying, Melvin's heart stops. When he wakes, the doctors tell him that he was clinically dead for several minutes. Changed by this experience, Melvin announces that he intends to become sober for the sake of Rex. Impressed, Jimmy requests that Melvin help clean up the neighborhood. After practicing his abilities, Melvin confronts Nathan's gang and threatens them. Nathan has Lucille shot in retaliation. After Lucille tells him to leave him alone, Melvin falls back into alcoholism and parties with a friend who was recently released from jail.
Question: What motivation does Doreen's ex-husband have for performing on the street?
[EX A]:
drug money.