Problem: Paper:

Paper made from mechanical pulp contains significant amounts of lignin, a major component in wood. In the presence of light and oxygen, lignin reacts to give yellow materials, which is why newsprint and other mechanical paper yellows with age. Paper made from bleached kraft or sulfite pulps does not contain significant amounts of lignin and is therefore better suited for books, documents and other applications where whiteness of the paper is essential.

What particle is associated with the greening of newspapers?
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A: unanswerable

Problem: These quarks and leptons interact through four fundamental forces: gravity, electromagnetism, weak interactions, and strong interactions. The Standard Model of particle physics is currently the best explanation for all of physics, but despite decades of efforts, gravity cannot yet be accounted for at the quantum level; it is only described by classical physics (see quantum gravity and graviton). Interactions between quarks and leptons are the result of an exchange of force-carrying particles (such as photons) between quarks and leptons. The force-carrying particles are not themselves building blocks. As one consequence, mass and energy (which cannot be created or destroyed) cannot always be related to matter (which can be created out of non-matter particles such as photons, or even out of pure energy, such as kinetic energy). Force carriers are usually not considered matter: the carriers of the electric force (photons) possess energy (see Planck relation) and the carriers of the weak force (W and Z bosons) are massive, but neither are considered matter either. However, while these particles are not considered matter, they do contribute to the total mass of atoms, subatomic particles, and all systems that contain them.
How many quarks and leptons are there?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Kerry established a separate political action committee, Keeping America's Promise, which declared as its mandate "A Democratic Congress will restore accountability to Washington and help change a disastrous course in Iraq", and raised money and channeled contributions to Democratic candidates in state and federal races. Through Keeping America's Promise in 2005, Kerry raised over $5.5 million for other Democrats up and down the ballot. Through his campaign account and his political action committee, the Kerry campaign operation generated more than $10 million for various party committees and 179 candidates for the U.S. House, Senate, state and local offices in 42 states focusing on the midterm elections during the 2006 election cycle. "Cumulatively, John Kerry has done as much if not more than any other individual senator", Hassan Nemazee, the national finance chairman of the DSCC said.
How many states' down-ballot candidates did Kerry help support?
A: 42

Context and question: Procopius wrote in 545 that "the Sclaveni and the Antae actually had a single name in the remote past; for they were both called Spori in olden times." He describes their social structure and beliefs:
When did Procopius write that "the Sclaveni and the Antae actually had a single name in the remote past; for they were both called Spori in olden times."?
Answer: 545

Question: Natural uranium consists of three major isotopes: uranium-238 (99.28% natural abundance), uranium-235 (0.71%), and uranium-234 (0.0054%). All three are radioactive, emitting alpha particles, with the exception that all three of these isotopes have small probabilities of undergoing spontaneous fission, rather than alpha emission. There are also five other trace isotopes: uranium-239, which is formed when 238U undergoes spontaneous fission, releasing neutrons that are captured by another 238U atom; uranium-237, which is formed when 238U captures a neutron but emits two more, which then decays to neptunium-237; uranium-233, which is formed in the decay chain of that neptunium-237; and finally, uranium-236 and -240, which appear in the decay chain of primordial plutonium-244. It is also expected that thorium-232 should be able to undergo double beta decay, which would produce uranium-232, but this has not yet been observed experimentally.
Is there an answer to this question: What is the natural abundance of uranium-235?

Answer: 0.71%

Problem: East Prussia:

In the 1772 First Partition of Poland, the Prussian king Frederick the Great annexed neighboring Royal Prussia, i.e. the Polish voivodeships of Pomerania (Gdansk Pomerania or Pomerelia), Malbork, Chemno and the Prince-Bishopric of Warmia, thereby bridging the "Polish Corridor" between his Prussian and Farther Pomeranian lands and cutting remaining Poland off the Baltic Coast. The territory of Warmia was incorporated into the lands of former Ducal Prussia, which, by administrative deed of 31 January 1773 were named East Prussia. The former Polish Pomerelian lands beyond the Vistula River together with Malbork and Chemno Land formed the Province of West Prussia with its capital at Marienwerder (Kwidzyn). The Polish Partition Sejm ratified the cession on 30 September 1773, whereafter Frederick officially went on to call himself a King "of" Prussia.

What was capital of Poland?
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A:
unanswerable