Problem: Incandescent light bulb:

In flood lamps used for photographic lighting, the tradeoff is made in the other direction. Compared to general-service bulbs, for the same power, these bulbs produce far more light, and (more importantly) light at a higher color temperature, at the expense of greatly reduced life (which may be as short as two hours for a type P1 lamp). The upper temperature limit for the filament is the melting point of the metal. Tungsten is the metal with the highest melting point, 3,695 K (6,191 F). A 50-hour-life projection bulb, for instance, is designed to operate only 50 C (122 F) below that melting point. Such a lamp may achieve up to 22 lumens per watt, compared with 17.5 for a 750-hour general service lamp.

What is the typical life of a P1 lamp?
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A: as short as two hours

Problem: In 2004, NIST researchers presented evidence that an isotropic non-crystalline metallic phase (dubbed "q-glass") could be grown from the melt. This phase is the first phase, or "primary phase," to form in the Al-Fe-Si system during rapid cooling. Interestingly, experimental evidence indicates that this phase forms by a first-order transition. Transmission electron microscopy (TEM) images show that the q-glass nucleates from the melt as discrete particles, which grow spherically with a uniform growth rate in all directions. The diffraction pattern shows it to be an isotropic glassy phase. Yet there is a nucleation barrier, which implies an interfacial discontinuity (or internal surface) between the glass and the melt.
Who showed that q-glass could be produced from a nucleation barrier?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
It seems to have been St Bernard of Clairvaux who, in the 12th century, explicitly raised the question of the Immaculate Conception. A feast of the Conception of the Blessed Virgin had already begun to be celebrated in some churches of the West. St Bernard blames the canons of the metropolitan church of Lyon for instituting such a festival without the permission of the Holy See. In doing so, he takes occasion to repudiate altogether the view that the conception of Mary was sinless. It is doubtful, however, whether he was using the term "conception" in the same sense in which it is used in the definition of Pope Pius IX. Bernard would seem to have been speaking of conception in the active sense of the mother's cooperation, for in his argument he says: "How can there be absence of sin where there is concupiscence (libido)?" and stronger expressions follow, showing that he is speaking of the mother and not of the child.
What did the query starter believe to be the ultimate difficulty in accepting the a virgin conception of Mary ?
A: How can there be absence of sin where there is concupiscence (libido)?

Context and question: In 1992, Yitzhak Rabin became Prime Minister following an election in which his party called for compromise with Israel's neighbors. The following year, Shimon Peres on behalf of Israel, and Mahmoud Abbas for the PLO, signed the Oslo Accords, which gave the Palestinian National Authority the right to govern parts of the West Bank and the Gaza Strip. The PLO also recognized Israel's right to exist and pledged an end to terrorism. In 1994, the IsraelJordan Treaty of Peace was signed, making Jordan the second Arab country to normalize relations with Israel. Arab public support for the Accords was damaged by the continuation of Israeli settlements and checkpoints, and the deterioration of economic conditions. Israeli public support for the Accords waned as Israel was struck by Palestinian suicide attacks. Finally, while leaving a peace rally in November 1995, Yitzhak Rabin was assassinated by a far-right-wing Jew who opposed the Accords.
When was Yitzhak Rabin assassinated?
Answer: November 1995

Question: The German rocket center in Peenemunde was located in the eastern part of Germany, which became the Soviet zone of occupation. On Stalin's orders, the Soviet Union sent its best rocket engineers to this region to see what they could salvage for future weapons systems. The Soviet rocket engineers were led by Sergei Korolev. He had been involved in space clubs and early Soviet rocket design in the 1930s, but was arrested in 1938 during Joseph Stalin's Great Purge and imprisoned for six years in Siberia. After the war, he became the USSR's chief rocket and spacecraft engineer, essentially the Soviet counterpart to von Braun. His identity was kept a state secret throughout the Cold War, and he was identified publicly only as "the Chief Designer." In the West, his name was only officially revealed when he died in 1966.
Is there an answer to this question: After the war, Sergei Korolev was known under what title?

Answer: USSR's chief rocket and spacecraft engineer

During the Second Sino-Japanese War, which led into World War II, much of Zhejiang was occupied by Japan and placed under the control of the Japanese puppet state known as the Reorganized National Government of China. Following the Doolittle Raid, most of the B-25 American crews that came down in China eventually made it to safety with the help of Chinese civilians and soldiers. The Chinese people who helped them, however, paid dearly for sheltering the Americans. The Imperial Japanese Army began the Zhejiang-Jiangxi Campaign to intimidate the Chinese out of helping downed American airmen. The Japanese killed an estimated 250,000 civilians while searching for Doolittle's men.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What type of American crews came down in China following the Doolittle raid?
Ah, so..
B-25