Extract the answer to the question from the following context. Question: How does Philadelphia's economy compare to the rest of the world? Context: The area's many universities and colleges make Philadelphia a top international study destination, as the city has evolved into an educational and economic hub. With a gross domestic product of $388 billion, Philadelphia ranks ninth among world cities and fourth in the nation. Philadelphia is the center of economic activity in Pennsylvania and is home to seven Fortune 1000 companies. The Philadelphia skyline is growing, with several nationally prominent skyscrapers. The city is known for its arts, culture, and history, attracting over 39 million domestic tourists in 2013. Philadelphia has more outdoor sculptures and murals than any other American city, and Fairmount Park is the largest landscaped urban park in the world. The 67 National Historic Landmarks in the city helped account for the $10 billion generated by tourism. Philadelphia is the birthplace of the United States Marine Corps, and is also the home of many U.S. firsts, including the first library (1731), first hospital (1751) and medical school (1765), first Capitol (1777), first stock exchange (1790), first zoo (1874), and first business school (1881). Philadelphia is the only World Heritage City in the United States.
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Answer: ninth among world cities


Q: Extract the answer to the question from the following context. Question: Factories in China often produce what type of gas in their emissions that acts as pollution? Context: A dense wave of smog began in the Central and Eastern part of China on 2 December 2013 across a distance of around 1,200 kilometres (750 mi), including Tianjin, Hebei, Shandong, Jiangsu, Anhui, Shanghai and Zhejiang. A lack of cold air flow, combined with slow-moving air masses carrying industrial emissions, collected airborne pollutants to form a thick layer of smog over the region. The heavy smog heavily polluted central and southern Jiangsu Province, especially in and around Nanjing, with its AQI pollution Index at "severely polluted" for five straight days and "heavily polluted" for nine. On 3 December 2013, levels of PM2.5 particulate matter average over 943 micrograms per cubic metre, falling to over 338 micrograms per cubic metre on 4 December 2013. Between 3:00 pm, 3 December and 2:00pm, 4 December local time, several expressways from Nanjing to other Jiangsu cities were closed, stranding dozens of passenger buses in Zhongyangmen bus station. From 5 to 6 December, Nanjing issued a red alert for air pollution and closed down all kindergarten through middle schools. Children's Hospital outpatient services increased by 33 percent; general incidence of bronchitis, pneumonia, upper respiratory tract infections significantly increased. The smog dissipated 12 December. Officials blamed the dense pollution on lack of wind, automobile exhaust emissions under low air pressure, and coal-powered district heating system in North China region. Prevailing winds blew low-hanging air masses of factory emissions (mostly SO2) towards China's east coast.
A: SO2


Question: Extract the answer to the question from the following context. Question: What number was the king in birth order? Context: In 1454 King Casimir IV granted the Nieszawa Statutes (Polish: "statuty cerkwicko-nieszawskie"), clarifying the legal basis of voivodship sejmiks (local parliaments). The king could promulgate new laws, raise taxes, or call for a levée en masse (pospolite ruszenie) only with the consent of the sejmiks, and the nobility were protected from judicial abuses. The Nieszawa Statutes also curbed the power of the magnates, as the Sejm (national parliament) received the right to elect many officials, including judges, voivods and castellans. These privileges were demanded by the szlachta as a compensation for their participation in the Thirteen Years' War.
Answer: IV


[Q]: Extract the answer to the question from the following context. Question: What is the Indian translation of the phrase black metal? Context: The Kuru kingdom was the first state-level society of the Vedic period, corresponding to the beginning of the Iron Age in northwestern India, around 1200 – 800 BCE, as well as with the composition of the Atharvaveda (the first Indian text to mention iron, as śyāma ayas, literally "black metal"). The Kuru state organized the Vedic hymns into collections, and developed the orthodox srauta ritual to uphold the social order. When the Kuru kingdom declined, the center of Vedic culture shifted to their eastern neighbours, the Panchala kingdom. The archaeological Painted Grey Ware culture, which flourished in the Haryana and western Uttar Pradesh regions of northern India from about 1100 to 600 BCE, is believed to correspond to the Kuru and Panchala kingdoms.
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[A]: śyāma ayas


input: Please answer the following: Extract the answer to the question from the following context. Question: Who promoted Nasser's image in the country? Context: Nasser was known for his intimate relationship with ordinary Egyptians. His availability to the public, despite assassination attempts against him, was unparalleled among his successors. A skilled orator, Nasser gave 1,359 speeches between 1953 and 1970, a record for any Egyptian head of state. Historian Elie Podeh wrote that a constant theme of Nasser's image was "his ability to represent Egyptian authenticity, in triumph or defeat". The national press also helped to foster his popularity and profile—more so after the nationalization of state media. Historian Tarek Osman wrote:
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output: The national press


Extract the answer to the question from the following context. Question: What form of government did China hope spread in nearby locations? Context: After the formation of the People's Republic of China in 1949, the Chinese government named the Western nations, led by the United States, as the biggest threat to its national security. Basing this judgment on China's century of humiliation beginning in the early 19th century, American support for the Nationalists during the Chinese Civil War, and the ideological struggles between revolutionaries and reactionaries, the Chinese leadership believed that China would become a critical battleground in the United States' crusade against Communism. As a countermeasure and to elevate China's standing among the worldwide Communist movements, the Chinese leadership adopted a foreign policy that actively promoted Communist revolutions throughout territories on China's periphery.
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Answer:
Communism