Problem: Please answer a question about the following article about Oklahoma:
With 39,000 acres (158 km2), the Tallgrass Prairie Preserve in north-central Oklahoma is the largest protected area of tallgrass prairie in the world and is part of an ecosystem that encompasses only 10 percent of its former land area, once covering 14 states. In addition, the Black Kettle National Grassland covers 31,300 acres (127 km2) of prairie in southwestern Oklahoma. The Wichita Mountains Wildlife Refuge is the oldest and largest of nine national wildlife refuges in the state and was founded in 1901, encompassing 59,020 acres (238.8 km2).
The Tallgrass Prairie Preserve is the largest protected tallgrass prairie in what area?
A: the world


Question: Read this and answer the question

Composers of classical music have often made use of folk music (music created by musicians who are commonly not classically trained, often from a purely oral tradition). Some composers, like Dvořák and Smetana, have used folk themes to impart a nationalist flavor to their work, while others like Bartók have used specific themes lifted whole from their folk-music origins.

Who used specific themes lifted from folk-music?
Answer: Bartók


Problem: From 1932, it was taught that the "little flock" of 144,000 would not be the only people to survive Armageddon. Rutherford explained that in addition to the 144,000 "anointed" who would be resurrected—or transferred at death—to live in heaven to rule over earth with Christ, a separate class of members, the "great multitude," would live in a paradise restored on earth; from 1935, new converts to the movement were considered part of that class. By the mid-1930s, the timing of the beginning of Christ's presence (Greek: parousía), his enthronement as king, and the start of the "last days" were each moved to 1914.
All new converts to the movmeent since 1935 were considered part of what class?
The answer is the following: great multitude


Theophrastus wrote some of the earliest descriptions of plants and animals, establishing the first taxonomy and looking at minerals in terms of their properties such as hardness. Pliny the Elder produced what is one of the largest encyclopedias of the natural world in 77 AD, and must be regarded as the rightful successor to Theophrastus. For example, he accurately describes the octahedral shape of the diamond, and proceeds to mention that diamond dust is used by engravers to cut and polish other gems owing to its great hardness. His recognition of the importance of crystal shape is a precursor to modern crystallography, while mention of numerous other minerals presages mineralogy. He also recognises that other minerals have characteristic crystal shapes, but in one example, confuses the crystal habit with the work of lapidaries. He was also the first to recognise that amber was a fossilized resin from pine trees because he had seen samples with trapped insects within them.
Who do engravers use diamond dust for?
to cut and polish other gems


Input: Ottoman Empire
The discovery of new maritime trade routes by Western European states allowed them to avoid the Ottoman trade monopoly. The Portuguese discovery of the Cape of Good Hope in 1488 initiated a series of Ottoman-Portuguese naval wars in the Indian Ocean throughout the 16th century. The Somali Muslim Ajuran Empire, allied with the Ottomans, defied the Portuguese economic monopoly in the Indian Ocean by employing a new coinage which followed the Ottoman pattern, thus proclaiming an attitude of economic independence in regard to the Portuguese.

What did the Portuguese discover in 1488?
Output: the Cape of Good Hope


Problem: Please answer a question about the following article about Zhejiang:
Valleys and plains are found along the coastline and rivers. The north of the province lies just south of the Yangtze Delta, and consists of plains around the cities of Hangzhou, Jiaxing, and Huzhou, where the Grand Canal of China enters from the northern border to end at Hangzhou. Another relatively flat area is found along the Qu River around the cities of Quzhou and Jinhua. Major rivers include the Qiangtang and Ou Rivers. Most rivers carve out valleys in the highlands, with plenty of rapids and other features associated with such topography. Well-known lakes include the West Lake of Hangzhou and the South Lake of Jiaxing.
What is a well-known lake of Hangzhou?
A:
West Lake