Problem: Guinea-Bissau:

An armed rebellion beginning in 1956 by the African Party for the Independence of Guinea and Cape Verde (PAIGC) under the leadership of Amílcar Cabral gradually consolidated its hold on then Portuguese Guinea. Unlike guerrilla movements in other Portuguese colonies, the PAIGC rapidly extended its military control over large portions of the territory, aided by the jungle-like terrain, its easily reached borderlines with neighbouring allies, and large quantities of arms from Cuba, China, the Soviet Union, and left-leaning African countries. Cuba also agreed to supply artillery experts, doctors, and technicians. The PAIGC even managed to acquire a significant anti-aircraft capability in order to defend itself against aerial attack. By 1973, the PAIGC was in control of many parts of Guinea, although the movement suffered a setback in January 1973 when Cabral was assassinated.

When was Cabral assassinated?
---
A: January 1973


Problem: England's first permanent settlement in the Americas was founded in 1607 in Jamestown, led by Captain John Smith and managed by the Virginia Company. Bermuda was settled and claimed by England as a result of the 1609 shipwreck there of the Virginia Company's flagship, and in 1615 was turned over to the newly formed Somers Isles Company. The Virginia Company's charter was revoked in 1624 and direct control of Virginia was assumed by the crown, thereby founding the Colony of Virginia. The London and Bristol Company was created in 1610 with the aim of creating a permanent settlement on Newfoundland, but was largely unsuccessful. In 1620, Plymouth was founded as a haven for puritan religious separatists, later known as the Pilgrims. Fleeing from religious persecution would become the motive of many English would-be colonists to risk the arduous trans-Atlantic voyage: Maryland was founded as a haven for Roman Catholics (1634), Rhode Island (1636) as a colony tolerant of all religions and Connecticut (1639) for Congregationalists. The Province of Carolina was founded in 1663. With the surrender of Fort Amsterdam in 1664, England gained control of the Dutch colony of New Netherland, renaming it New York. This was formalised in negotiations following the Second Anglo-Dutch War, in exchange for Suriname. In 1681, the colony of Pennsylvania was founded by William Penn. The American colonies were less financially successful than those of the Caribbean, but had large areas of good agricultural land and attracted far larger numbers of English emigrants who preferred their temperate climates.
Who led England's first permanent settlement in the Americas?
---
Answer: Captain John Smith


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The physics of quantum mechanics was thereby reduced to the mathematics of Hilbert spaces and linear operators acting on them. For example, the uncertainty principle, according to which the determination of the position of a particle prevents the determination of its momentum and vice versa, is translated into the non-commutativity of the two corresponding operators. This new mathematical formulation included as special cases the formulations of both Heisenberg and Schrödinger. When Heisenberg was informed von Neumann had clarified the difference between an unbounded operator that was a Self-adjoint operator and one that was merely symmetric, Heisenberg replied "Eh? What is the difference?"
The physics of quantum mechanics included special cases for what work?
A: formulations of both Heisenberg and Schrödinger


Context and question: Many television shows and films have been produced which portray in-character professional wrestlers as protagonists, such as Ready to Rumble, ¡Mucha Lucha!, Nacho Libre, and the Santo film series. In the wildly popular Rocky series of films about the fictional boxer Rocky Balboa, Rocky III saw its hero fighting a "boxer vs. wrestler" exhibition match against the enormous and villainous wrestler "Thunderlips", portrayed by real-life soon-to-be wrestling icon Hulk Hogan. At least two stage plays set in the world of pro wrestling have been produced: The Baron is a comedy that retells the life of an actual performer known as Baron von Raschke. From Parts Unknown... is an award-nominated Canadian drama about the rise and fall of a fictional wrestler. The 2009 South Park episode "W.T.F." played on the soap operatic elements of professional wrestling. One of the lead characters on the Disney Channel series Kim Possible was a huge fan of pro wrestling and actually featured it on an episode (with two former WWE wrestlers voicing the two fictitious wrestlers featured in the episode). The 2008 film The Wrestler, about a washed-up professional wrestler, garnered several Oscar nominations.
Name a popular series of boxing films?
Answer: Rocky series


Question: Iron is usually found as iron ore on Earth, except for one deposit of native iron in Greenland, which was used by the Inuit people. Native copper, however, was found worldwide, along with silver, gold and platinum, which were also used to make tools, jewelry, and other objects since Neolithic times. Copper was the hardest of these metals, and the most widely distributed. It became one of the most important metals to the ancients. Eventually, humans learned to smelt metals such as copper and tin from ore, and, around 2500 BC, began alloying the two metals to form bronze, which is much harder than its ingredients. Tin was rare, however, being found mostly in Great Britain. In the Middle East, people began alloying copper with zinc to form brass. Ancient civilizations took into account the mixture and the various properties it produced, such as hardness, toughness and melting point, under various conditions of temperature and work hardening, developing much of the information contained in modern alloy phase diagrams. Arrowheads from the Chinese Qin dynasty (around 200 BC) were often constructed with a hard bronze-head, but a softer bronze-tang, combining the alloys to prevent both dulling and breaking during use.
Is there an answer to this question: What did humans began alloying around 2500 A.D.?

Answer: unanswerable


Annelids' cuticles are made of collagen fibers, usually in layers that spiral in alternating directions so that the fibers cross each other. These are secreted by the one-cell deep epidermis (outermost skin layer). A few marine annelids that live in tubes lack cuticles, but their tubes have a similar structure, and mucus-secreting glands in the epidermis protect their skins. Under the epidermis is the dermis, which is made of connective tissue, in other words a combination of cells and non-cellular materials such as collagen. Below this are two layers of muscles, which develop from the lining of the coelom (body cavity): circular muscles make a segment longer and slimmer when they contract, while under them are longitudinal muscles, usually four distinct strips, whose contractions make the segment shorter and fatter. Some annelids also have oblique internal muscles that connect the underside of the body to each side.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What do non-cuticle annelids use to protect their offspring?
Ah, so..
unanswerable