Problem: East Prussia:

Although Brandenburg was a part of the Holy Roman Empire, the Prussian lands were not within the Holy Roman Empire and were with the administration by the Teutonic Order grandmasters under jurisdiction of the Emperor. In return for supporting Emperor Leopold I in the War of the Spanish Succession, Elector Frederick III was allowed to crown himself "King in Prussia" in 1701. The new kingdom ruled by the Hohenzollern dynasty became known as the Kingdom of Prussia. The designation "Kingdom of Prussia" was gradually applied to the various lands of Brandenburg-Prussia. To differentiate from the larger entity, the former Duchy of Prussia became known as Altpreuen ("Old Prussia"), the province of Prussia, or "East Prussia".

Who elected there self as King of Prussia in 1701?
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A: Frederick III

Problem: In the 1970s, the United States began developing a new generation of reusable orbital spacecraft known as the Space Shuttle, and launched a range of unmanned probes. The USSR continued to develop space station technology with the Salyut program and Mir ('Peace' or 'World', depending on the context) space station, supported by Soyuz spacecraft. They developed their own large space shuttle under the Buran program. However, the USSR dissolved in 1991 and the remains of its space program were distributed to various Eastern European countries. The United States and Russia would work together in space with the ShuttleMir Program, and again with the International Space Station.
What year did the USSR disband?
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Answer: 1991

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
PlayStation 3 uses the Cell microprocessor, designed by Sony, Toshiba and IBM, as its CPU, which is made up of one 3.2 GHz PowerPC-based "Power Processing Element" (PPE) and eight Synergistic Processing Elements (SPEs). The eighth SPE is disabled to improve chip yields. Only six of the seven SPEs are accessible to developers as the seventh SPE is reserved by the console's operating system. Graphics processing is handled by the NVIDIA RSX 'Reality Synthesizer', which can produce resolutions from 480i/576i SD up to 1080p HD. PlayStation 3 has 256 MB of XDR DRAM main memory and 256 MB of GDDR3 video memory for the RSX.
What doesn't PPE stand for?
A: unanswerable

Context and question: Residents of Norfolk Island do not pay Australian federal taxes, creating a tax haven for locals and visitors alike. Because there is no income tax, the island's legislative assembly raises money through an import duty, fuel levy, medicare levy, GST of 12% and local/international phone calls. In a move that apparently surprised many islanders the Chief Minister of Norfolk Island, David Buffett, announced on 6 November 2010 that the island would voluntarily surrender its tax free status in return for a financial bailout from the federal government to cover significant debts. The introduction of income taxation will now come into effect on July 1, 2016, with a variation of opinion on the island about these changes but with many understanding that for the island's governance to continue there is a need to pay into the commonwealth revenue pool so that the island can have assistance in supporting its delivery of State government responsibilities such as health, education, medicare, and infrastructure. Prior to these reforms residents of Norfolk Island were not entitled to social services. It appears that the reforms do extend to companies and trustees and not only individuals.
When will income tax be removed by Norfolk Island?
Answer: unanswerable

Question: Light is the signal by which plants synchronize their internal clocks to their environment and is sensed by a wide variety of photoreceptors. Red and blue light are absorbed through several phytochromes and cryptochromes. One phytochrome, phyA, is the main phytochrome in seedlings grown in the dark but rapidly degrades in light to produce Cry1. Phytochromes BE are more stable with phyB, the main phytochrome in seedlings grown in the light. The cryptochrome (cry) gene is also a light-sensitive component of the circadian clock and is thought to be involved both as a photoreceptor and as part of the clock's endogenous pacemaker mechanism. Cryptochromes 12 (involved in blueUVA) help to maintain the period length in the clock through a whole range of light conditions.
Is there an answer to this question: What is the main phytochrome found in seedling grown in light?

Answer: phyB

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
On the second day, U.S. reconnaissance planes located Ozawa's fleet, 275 miles (443 km)[citation needed] away, and submarines sank two Japanese carriers. Mitscher launched 230 torpedo planes and dive bombers. He then discovered the enemy was actually another 60 miles (97 km)[citation needed] further off, out of aircraft range (based on a roundtrip flight). Mitscher decided this chance to destroy the Japanese fleet was worth the risk of aircraft losses due to running out of fuel on the return flight. Overall, the U.S. lost 130 planes and 76 aircrew; however, Japan lost 450 planes, three carriers, and 445 aircrew. The Imperial Japanese Navy's carrier force was effectively destroyed.
How many U.S. aircrews were lost?
A:
76