Problem: Please answer a question about the following article about Internet service provider:
In the simplest case, a single connection is established to an upstream ISP and is used to transmit data to or from areas of the Internet beyond the home network; this mode of interconnection is often cascaded multiple times until reaching a tier 1 carrier. In reality, the situation is often more complex. ISPs with more than one point of presence (PoP) may have separate connections to an upstream ISP at multiple PoPs, or they may be customers of multiple upstream ISPs and may have connections to each one of them at one or more point of presence. Transit ISPs provide large amounts of bandwidth for connecting hosting ISPs and access ISPs.
A mode of interconnection is often cascaded multiple times until reaching what?
A: a tier 1 carrier


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Besides increased efficiency of power plants, there was an increase in efficiency (between 1950 and 1973) of the railway utilization of this electricity with energy-intensity dropping from 218 to 124 kwh/10,000 gross tonne-km (of both passenger and freight trains) or a 43% drop. Since energy-intensity is the inverse of energy-efficiency it drops as efficiency goes up. But most of this 43% decrease in energy-intensity also benefited diesel traction. The conversion of wheel bearings from plain to roller, increase of train weight, converting single track lines to double track (or partially double track), and the elimination of obsolete 2-axle freight cars increased the energy-efficiency of all types of traction: electric, diesel, and steam. However, there remained a 12–15% reduction of energy-intensity that only benefited electric traction (and not diesel). This was due to improvements in locomotives, more widespread use of regenerative braking (which in 1989 recycled 2.65% of the electric energy used for traction,) remote control of substations, better handling of the locomotive by the locomotive crew, and improvements in automation. Thus the overall efficiency of electric traction as compared to diesel more than doubled between 1950 and the mid-1970s in the Soviet Union. But after 1974 (thru 1980) there was no improvement in energy-intensity (wh/tonne-km) in part due to increasing speeds of passenger and freight trains.

Was there an energy efficiency improvement in the period 1974 through 1980?
Answer: no improvement


Problem: Major outputs for the state include textiles, cotton, cattle, and electrical power. Tennessee has over 82,000 farms, roughly 59 percent of which accommodate beef cattle. Although cotton was an early crop in Tennessee, large-scale cultivation of the fiber did not begin until the 1820s with the opening of the land between the Tennessee and Mississippi Rivers. The upper wedge of the Mississippi Delta extends into southwestern Tennessee, and it was in this fertile section that cotton took hold. Soybeans are also heavily planted in West Tennessee, focusing on the northwest corner of the state.
Which river landform partly in Tennessee provided the most fertile land for cotton production?
The answer is the following: Mississippi Delta


The establishment of Indian Drugs and Pharmaceuticals Limited (IDPL), a public sector undertaking, in 1961 was followed over the decades by many national and global companies opening manufacturing and research facilities in the city. As of 2010[update], the city manufactured one third of India's bulk drugs and 16% of biotechnology products, contributing to its reputation as "India's pharmaceutical capital" and the "Genome Valley of India". Hyderabad is a global centre of information technology, for which it is known as Cyberabad (Cyber City). As of 2013[update], it contributed 15% of India's and 98% of Andhra Pradesh's exports in IT and ITES sectors and 22% of NASSCOM's total membership is from the city. The development of HITEC City, a township with extensive technological infrastructure, prompted multinational companies to establish facilities in Hyderabad. The city is home to more than 1300 IT and ITES firms, including global conglomerates such as Microsoft (operating its largest R&D campus outside the US), Google, IBM, Yahoo!, Dell, Facebook,:3 and major Indian firms including Tech Mahindra, Infosys, Tata Consultancy Services (TCS), Polaris and Wipro.:3 In 2009 the World Bank Group ranked the city as the second best Indian city for doing business. The city and its suburbs contain the highest number of special economic zones of any Indian city.
In what year was Indian Drugs and Pharmaceuticals Limited established?
1961


Input: American Idol
In May 2005, Carrie Underwood was announced the winner, with Bice the runner-up. Both Underwood and Bice released the coronation song "Inside Your Heaven". Underwood has since sold 65 million records worldwide, and become the most successful Idol contestant in the U.S., selling over 14 million albums copies in the U.S. and has more  Underwood has won seven Grammy Awards, the most Grammys by an "American Idol" alumnus.

Who was the winner of this season?
Output: Carrie Underwood


Problem: Please answer a question about the following article about Quran:
One of the notable authors of esoteric interpretation prior to the 12th century is Sulami (d. 1021) without whose work the majority of very early Sufi commentaries would not have been preserved. Sulami's major commentary is a book named haqaiq al-tafsir ("Truths of Exegesis") which is a compilation of commentaries of earlier Sufis. From the 11th century onwards several other works appear, including commentaries by Qushayri (d. 1074), Daylami (d. 1193), Shirazi (d. 1209) and Suhrawardi (d. 1234). These works include material from Sulami's books plus the author's contributions. Many works are written in Persian such as the works of Maybudi (d. 1135) kash al-asrar ("the unveiling of the secrets"). Rumi (d. 1273) wrote a vast amount of mystical poetry in his book Mathnawi. Rumi makes heavy use of the Quran in his poetry, a feature that is sometimes omitted in translations of Rumi's work. A large number of Quranic passages can be found in Mathnawi, which some consider a kind of Sufi interpretation of the Quran. Rumi's book is not exceptional for containing citations from and elaboration on the Quran, however, Rumi does mention Quran more frequently. Simnani (d. 1336) wrote two influential works of esoteric exegesis on the Quran. He reconciled notions of God's manifestation through and in the physical world with the sentiments of Sunni Islam. Comprehensive Sufi commentaries appear in the 18th century such as the work of Ismail Hakki Bursevi (d. 1725). His work ruh al-Bayan (the Spirit of Elucidation) is a voluminous exegesis. Written in Arabic, it combines the author's own ideas with those of his predecessors (notably Ibn Arabi and Ghazali), all woven together in Hafiz, a Persian poetry form.
In which year did the poet Rumi die?
A:
1273