input: Please answer the following: Extract the answer to the question from the following context. Question: How did the Z2 work? Context: Early digital computers were electromechanical; electric switches drove mechanical relays to perform the calculation. These devices had a low operating speed and were eventually superseded by much faster all-electric computers, originally using vacuum tubes. The Z2, created by German engineer Konrad Zuse in 1939, was one of the earliest examples of an electromechanical relay computer.
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output: electric switches drove mechanical relays to perform the calculation

input: Please answer the following: Extract the answer to the question from the following context. Question: What was AFL not? Context: In October 2008, Tom Benson announced that the New Orleans VooDoo were ceasing operations and folding "based on circumstances currently affecting the league and the team". Shortly thereafter, an article in Sports Business Journal announced that the AFL had a tentative agreement to sell a $100 million stake in the league to Platinum Equity; in exchange, Platinum Equity would create a centralized, single-entity business model that would streamline league and team operations and allow the league to be more profitable. Benson's move to shut down the VooDoo came during the Platinum Equity conference call, leading to speculation that he had folded because of the deal.
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output: profitable

input: Please answer the following: Extract the answer to the question from the following context. Question: How many tones are required to determine if change is percieved Context: The just-noticeable difference (jnd) (the threshold at which a change is perceived) depends on the tone's frequency content. Below 500 Hz, the jnd is about 3 Hz for sine waves, and 1 Hz for complex tones; above 1000 Hz, the jnd for sine waves is about 0.6% (about 10 cents). The jnd is typically tested by playing two tones in quick succession with the listener asked if there was a difference in their pitches. The jnd becomes smaller if the two tones are played simultaneously as the listener is then able to discern beat frequencies. The total number of perceptible pitch steps in the range of human hearing is about 1,400; the total number of notes in the equal-tempered scale, from 16 to 16,000 Hz, is 120.
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output: two

input: Please answer the following: Extract the answer to the question from the following context. Question: which way did the first urban sprawl go? Context: The city grew out towards the west of the boundaries of the peninsula formed by the River Aare. The Zytglogge tower marked the western boundary of the city from 1191 until 1256, when the Kafigturm took over this role until 1345. It was, in turn, succeeded by the Christoffelturm (formerly located close to the site of the modern-day railway station) until 1622. During the time of the Thirty Years' War, two new fortifications the so-called big and small Schanze (entrenchment) were built to protect the whole area of the peninsula.
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output:
west