Input: Read this: The Houston area is a leading center for building oilfield equipment. Much of its success as a petrochemical complex is due to its busy ship channel, the Port of Houston. In the United States, the port ranks first in international commerce and tenth among the largest ports in the world. Unlike most places, high oil and gasoline prices are beneficial for Houston's economy, as many of its residents are employed in the energy industry. Houston is the beginning or end point of numerous oil, gas, and products pipelines:
Question: Of what is Texas a center?

Output: unanswerable

Input: Read this: In the following decades there was a constant battle between the company lobby and the Parliament. The company sought a permanent establishment, while the Parliament would not willingly allow it greater autonomy and so relinquish the opportunity to exploit the company's profits. In 1712, another act renewed the status of the company, though the debts were repaid. By 1720, 15% of British imports were from India, almost all passing through the company, which reasserted the influence of the company lobby. The licence was prolonged until 1766 by yet another act in 1730.
Question: Who never had any disagreements?

Output: unanswerable

Input: Read this: From 1904 to 1907, the Herero and the Namaqua took up arms against the Germans and in calculated punitive action by the German occupiers, the 'first genocide of the Twentieth Century' was committed. In the Herero and Namaqua genocide, 10,000 Nama (half the population) and approximately 65,000 Hereros (about 80% of the population) were systematically murdered. The survivors, when finally released from detention, were subjected to a policy of dispossession, deportation, forced labour, racial segregation and discrimination in a system that in many ways anticipated apartheid.
Question: Which group to German occupiers first start to commit genocide against?

Output: unanswerable

Input: Read this: European maps continued to show this hypothesized land until Captain James Cook's ships, HMS Resolution and Adventure, crossed the Antarctic Circle on 17 January 1773, in December 1773 and again in January 1774. Cook came within about 120 km (75 mi) of the Antarctic coast before retreating in the face of field ice in January 1773. The first confirmed sighting of Antarctica can be narrowed down to the crews of ships captained by three individuals. According to various organizations (the National Science Foundation, NASA, the University of California, San Diego, and other sources), ships captained by three men sighted Antarctica or its ice shelf in 1820: von Bellingshausen (a captain in the Imperial Russian Navy), Edward Bransfield (a captain in the Royal Navy), and Nathaniel Palmer (a sealer out of Stonington, Connecticut). The expedition led by von Bellingshausen and Lazarev on the ships Vostok and Mirny reached a point within 32 km (20 mi) from Queen Maud's Land and recorded the sight of an ice shelf at 692128S 21450W / 69.35778S 2.24722W / -69.35778; -2.24722, which became known as the Fimbul ice shelf. This happened three days before Bransfield sighted land, and ten months before Palmer did so in November 1820. The first documented landing on Antarctica was by the American sealer John Davis, apparently at Hughes Bay, near Cape Charles, in West Antarctica on 7 February 1821, although some historians dispute this claim. The first recorded and confirmed landing was at Cape Adair in 1895.
Question: When did Cook's ships cross the Antarctic circle?

Output:
17 January 1773