Problem: Printed circuit board:

Originally, every electronic component had wire leads, and the PCB had holes drilled for each wire of each component. The components' leads were then passed through the holes and soldered to the PCB trace. This method of assembly is called through-hole construction. In 1949, Moe Abramson and Stanislaus F. Danko of the United States Army Signal Corps developed the Auto-Sembly process in which component leads were inserted into a copper foil interconnection pattern and dip soldered. The patent they obtained in 1956 was assigned to the U.S. Army. With the development of board lamination and etching techniques, this concept evolved into the standard printed circuit board fabrication process in use today. Soldering could be done automatically by passing the board over a ripple, or wave, of molten solder in a wave-soldering machine. However, the wires and holes are wasteful since drilling holes is expensive and the protruding wires are merely cut off.

What type of construction was originally used for all electronic components?
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A: through-hole


Problem: Digestion begins in the mouth with the secretion of saliva and its digestive enzymes. Food is formed into a bolus by the mechanical mastication and swallowed into the esophagus from where it enters the stomach through the action of peristalsis. Gastric juice contains hydrochloric acid and pepsin which would damage the walls of the stomach and mucus is secreted for protection. In the stomach further release of enzymes break down the food further and this is combined with the churning action of the stomach. The partially digested food enters the duodenum as a thick semi-liquid chyme. In the small intestine, the larger part of digestion takes place and this is helped by the secretions of bile, pancreatic juice and intestinal juice. The intestinal walls are lined with villi, and their epithelial cells is covered with numerous microvilli to improve the absorption of nutrients by increasing the surface area of the intestine.
What is the action of food being moved into the stomach?
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Answer: peristalsis


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The George Washington Bridge is the world's busiest motor vehicle bridge, connecting Manhattan to Bergen County, New Jersey. The Verrazano-Narrows Bridge is the longest suspension bridge in the Americas and one of the world's longest. The Brooklyn Bridge is an icon of the city itself. The towers of the Brooklyn Bridge are built of limestone, granite, and Rosendale cement, and their architectural style is neo-Gothic, with characteristic pointed arches above the passageways through the stone towers. This bridge was also the longest suspension bridge in the world from its opening until 1903, and is the first steel-wire suspension bridge.
The biggest suspension bridge in the US is what?
A: The Verrazano-Narrows Bridge


Context and question: The Muslims took control of the Island in 904, after decades of fierce fighting, and the Emirate of Sicily was established. Muslim rule on the island lasted for about 120 years and was marked by cruelty and brutality against the native population, which was reduced into near slavery[clarification needed] and Christian churches across the island were all completely destroyed.[page needed] Palermo (Balarm during Arab rule) displaced Syracuse as the capital city of Sicily. It was said to have then begun to compete with Córdoba and Cairo in terms of importance and splendor. For more than one hundred years Palermo was the capital of a flourishing emirate. The Arabs also introduced many agricultural crops which remain a mainstay of Sicilian cuisine.
What did the Arabs introduce that continues to be relevant to Palermo's culture today?
Answer: agricultural crops


Question: On May 16 China stated it had also received $457 million in donated money and goods for rescue efforts so far, including $83 million from 19 countries and four international organizations. Saudi Arabia was the largest aid donor to China, providing close to €40,000,000 in financial assistance, and an additional €8,000,000 worth of relief materials.
Is there an answer to this question: How much financial assistance did Saudi Arabia give China?

Answer: €40,000,000


Problem: Hunting:

A scientific study in the journal, Biological Conservation, states that trophy hunting is of "major importance to conservation in Africa by creating economic incentives for conservation over vast areas, including areas which may be unsuitable for alternative wildlife-based land uses such as photographic ecotourism." However, another study states that less than 3% of a trophy hunters' expenditures reach the local level, meaning that the economic incentive and benefit is "minimal, particularly when we consider the vast areas of land that hunting concessions occupy."

What did another study show that less than 3% of was used to mount trophies?
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A:
unanswerable