Problem: Please answer a question about the following article about BeiDou Navigation Satellite System:
Unlike the American GPS, Russian GLONASS, and European Galileo systems, which use medium Earth orbit satellites, BeiDou-1 uses satellites in geostationary orbit. This means that the system does not require a large constellation of satellites, but it also limits the coverage to areas on Earth where the satellites are visible. The area that can be serviced is from longitude 70E to 140E and from latitude 5N to 55N. A frequency of the system is 2491.75 MHz.
What type of satellites does the BeiDou-1 system use?
A: satellites in geostationary orbit

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Symbiosis played a major role in the co-evolution of flowering plants and the animals that pollinate them. Many plants that are pollinated by insects, bats, or birds have highly specialized flowers modified to promote pollination by a specific pollinator that is also correspondingly adapted. The first flowering plants in the fossil record had relatively simple flowers. Adaptive speciation quickly gave rise to many diverse groups of plants, and, at the same time, corresponding speciation occurred in certain insect groups. Some groups of plants developed nectar and large sticky pollen, while insects evolved more specialized morphologies to access and collect these rich food sources. In some taxa of plants and insects the relationship has become dependent, where the plant species can only be pollinated by one species of insect.

How big a part did symbiosis have in the development of flowering plants and their pollinators?
Answer: a major role

Problem: During the early years of the Cold War from 1946 to 1958, the United States tested 67 nuclear weapons at its Pacific Proving Grounds located in the Marshall Islands, including the largest atmospheric nuclear test ever conducted by the U.S., code named Castle Bravo. "The bombs had a total yield of 108,496 kilotons, over 7,200 times more powerful than the atomic weapons used during World War II." With the 1952 test of the first U.S. hydrogen bomb, code named "Ivy Mike," the island of Elugelab in the Enewetak atoll was destroyed. In 1956, the United States Atomic Energy Commission regarded the Marshall Islands as "by far the most contaminated place in the world."
What was the name of the United States' largest atmospheric nuclear test?
The answer is the following: Castle Bravo

In central banking, the privileged status of the central bank is that it can make as much money as it deems needed. In the United States Federal Reserve Bank, the Federal Reserve buys assets: typically, bonds issued by the Federal government. There is no limit on the bonds that it can buy and one of the tools at its disposal in a financial crisis is to take such extraordinary measures as the purchase of large amounts of assets such as commercial paper. The purpose of such operations is to ensure that adequate liquidity is available for functioning of the financial system.
What is the purpose of buying commercial paper in a time of financial crisis?
to ensure that adequate liquidity is available for functioning

Input: Israel
Israel (/zrel/ or /zril/; Hebrew: Yisra'el; Arabic: Isra'il), officially the State of Israel (Hebrew: Medinat Yisra'el [medinat jisael] ( listen); Arabic: Dawlat Isra'il [dawlat israil]), is a sovereign state in Western Asia. The country is situated in the Middle East at the southeastern shore of the Mediterranean Sea and the northern shore of the Gulf of Aqaba in the Red Sea. It shares land borders with Lebanon to the north, Syria in the northeast, Jordan on the east, the Palestinian territories (which are claimed by the State of Palestine and are partially controlled by Israel) comprising the West Bank and Gaza Strip to the east and west, respectively, and Egypt to the southwest. It contains geographically diverse features within its relatively small area. Israel's financial and technology center is Tel Aviv while Jerusalem is both the self-designated capital and most populous individual city under the country's governmental administration. Israeli sovereignty over Jerusalem is internationally unrecognized.[note 1]

What's Israel's financial and technology center?
Output: Tel Aviv

Problem: Please answer a question about the following article about Elevator:
A climbing elevator is a self-ascending elevator with its own propulsion. The propulsion can be done by an electric or a combustion engine. Climbing elevators are used in guyed masts or towers, in order to make easy access to parts of these constructions, such as flight safety lamps for maintenance. An example would be the Moonlight towers in Austin, Texas, where the elevator holds only one person and equipment for maintenance. The Glasgow Tower an observation tower in Glasgow, Scotland also makes use of two climbing elevators.
What defines a climbing elevator?
A:
a self-ascending elevator with its own propulsion