Input: Read this: The Classical era stringed instruments were the four instruments which form the string section of the orchestra: the violin, viola, cello and contrabass. Woodwinds included the basset clarinet, basset horn, clarinette d'amour, the Classical clarinet, the chalumeau, the flute, oboe and bassoon. Keyboard instruments included the clavichord and the fortepiano. While the harpsichord was still used in basso continuo accompaniment in the 1750s and 1760s, it fell out of use in the end of the century. Brass instruments included the buccin, the ophicleide (a serpent replacement which was the precursor of tuba) and the natural horn.
Question: What instrument was the precursor of the tuba?

Output: the ophicleide


QUES: It is possible that around 62 million people died in the war; estimates vary greatly. About 60% of all casualties were civilians, who died as a result of disease, starvation, genocide (in particular, the Holocaust), and aerial bombing. The former Soviet Union and China suffered the most casualties. Estimates place deaths in the Soviet Union at around 23 million, while China suffered about 10 million. No country lost a greater portion of its population than Poland: approximately 5.6 million, or 16%, of its pre-war population of 34.8 million died.

What Was estimated amount of deaths during the war?
What is the answer?
ANS: 62 million


QUES: New York City also has an extensive web of expressways and parkways, which link the city's boroughs to each other as well as to northern New Jersey, Westchester County, Long Island, and southwestern Connecticut through various bridges and tunnels. Because these highways serve millions of outer borough and suburban residents who commute into Manhattan, it is quite common for motorists to be stranded for hours in traffic jams that are a daily occurrence, particularly during rush hour.
At what time are drivers in New York most likely to experience traffic jams?

ANS: rush hour


The WVS (Women's Voluntary Services for Civil Defence) was set up under the direction of Samuel Hoare, Home Secretary in 1938 specifically in the event of air raids. Hoare considered it the female branch of the ARP. They organised the evacuation of children, established centres for those displaced by bombing, and operated canteens, salvage and recycling schemes. By the end of 1941, the WVS had one million members. Prior to the outbreak of war, civilians were issued with 50 million respirators (gas masks). These were issued in the event of bombing taking place with gas before evacuation.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How many gas mask were issued before the war?
Ah, so.. 50 million


Question: One-color light is well suited for traffic lights and signals, exit signs, emergency vehicle lighting, ships' navigation lights or lanterns (chromacity and luminance standards being set under the Convention on the International Regulations for Preventing Collisions at Sea 1972, Annex I and the CIE) and LED-based Christmas lights. In cold climates, LED traffic lights may remain snow-covered. Red or yellow LEDs are used in indicator and alphanumeric displays in environments where night vision must be retained: aircraft cockpits, submarine and ship bridges, astronomy observatories, and in the field, e.g. night time animal watching and military field use.
Try to answer this question if possible: In what year were luminescence standards set?
Answer: 1972


Problem: A global drop in sea level at the end of the Devonian reversed early in the Carboniferous; this created the widespread epicontinental seas and carbonate deposition of the Mississippian. There was also a drop in south polar temperatures; southern Gondwana was glaciated throughout the period, though it is uncertain if the ice sheets were a holdover from the Devonian or not. These conditions apparently had little effect in the deep tropics, where lush coal swamps flourished within 30 degrees of the northernmost glaciers. A mid-Carboniferous drop in sea-level precipitated a major marine extinction, one that hit crinoids and ammonites especially hard. This sea-level drop and the associated unconformity in North America separate the Mississippian Period from the Pennsylvanian period.
The Pennsylvania period is separated by the drop in Carboniferous era sea levels from what other period?
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Answer:
Mississippian Period