Given the following passage "The 1469 marriage of Isabella I of Castile and Ferdinand II of Aragon and the 1479 death of John II of Aragon led to the creation of modern-day Spain. In 1492, Granada was captured from the Moors, thereby completing the Reconquista. Portugal had during the 15th century particularly under Henry the Navigator gradually explored the coast of Africa, and in 1498, Vasco da Gama found the sea route to India. The Spanish monarchs met the Portuguese challenge by financing the expedition of Christopher Columbus to find a western sea route to India, leading to the discovery of the Americas in 1492.", answer the following question. Note that the answer is present within the text. Question: Where did Christopher Columbus end up while searching for a western sea route?
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Answer: the Americas

Given the following passage "The painters of the early Renaissance used two traditional lake pigments, made from mixing dye with either chalk or alum, kermes lake, made from kermes insects, and madder lake, made from the rubia tinctorum plant. With the arrival of cochineal, they had a third, carmine, which made a very fine crimson, though it had a tendency to change color if not used carefully. It was used by almost all the great painters of the 15th and 16th centuries, including Rembrandt, Vermeer, Rubens, Anthony van Dyck, Diego Velazquez and Tintoretto. Later it was used by Thomas Gainsborough, Seurat and J.M.W. Turner.", answer the following question. Note that the answer is present within the text. Question: Who painted with cochineal after the great painters of the 15th and 16th centuries?
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Answer: Thomas Gainsborough, Seurat and J.M.W. Turner

Given the following passage "The second approach to the problem took as its base the notion of class, and defines a set as a class which belongs to other classes, while a proper class is defined as a class which does not belong to other classes. Under the ZermeloFraenkel approach, the axioms impede the construction of a set of all sets which do not belong to themselves. In contrast, under the von Neumann approach, the class of all sets which do not belong to themselves can be constructed, but it is a proper class and not a set.", answer the following question. Note that the answer is present within the text. Question: When a class is not a set?
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Answer:
class of all sets which do not belong to themselves