Problem: Late in the 19th century, Paris hosted two major international expositions: the 1889 Universal Exposition, was held to mark the centennial of the French Revolution and featured the new Eiffel Tower; and the 1900 Universal Exposition, which gave Paris the Pont Alexandre III, the Grand Palais, the Petit Palais and the first Paris Metro line. Paris became the laboratory of Naturalism (Emile Zola) and Symbolism (Charles Baudelaire and Paul Verlaine), and of Impressionism in art (Courbet, Manet, Monet, Renoir.)
Where was the Eiffel Tower revealed?
The answer is the following: 1889 Universal Exposition

The earliest examples of life-sized statues of Apollo, may be two figures from the Ionic sanctuary on the island of Delos. Such statues were found across the Greek speaking world, the preponderance of these were found at the sanctuaries of Apollo with more than one hundred from the sanctuary of Apollo Ptoios, Boeotia alone. The last stage in the development of the Kouros type is the late archaic period (520485 BC), in which the Greek sculpture attained a full knowledge of human anatomy and used to create a relative harmonious whole. Ranking from the very few bronzes survived to us is the masterpiece bronze Piraeus Apollo. It was found in Piraeus, the harbour of Athens. The statue originally held the bow in its left hand, and a cup of pouring libation in its right hand. It probably comes from north-eastern Peloponnesus. The emphasis is given in anatomy, and it is one of the first attempts to represent a kind of motion, and beauty relative to proportions, which appear mostly in post-Archaic art. The statue throws some light on an artistic centre which, with an independently developed harder, simpler, and heavier style, restricts Ionian influence in Athens. Finally, this is the germ from which the art of Polykleitos was to grow two or three generations later.
What did Piraeus Apollo hold in his left hand?
the bow

Input: Mammal
In 1997, the mammals were comprehensively revised by Malcolm C. McKenna and Susan K. Bell, which has resulted in the McKenna/Bell classification. Their 1997 book, Classification of Mammals above the Species Level, is the most comprehensive work to date on the systematics, relationships, and occurrences of all mammal taxa, living and extinct, down through the rank of genus, though recent molecular genetic data challenge several of the higher level groupings. The authors worked together as paleontologists at the American Museum of Natural History, New York. McKenna inherited the project from Simpson and, with Bell, constructed a completely updated hierarchical system, covering living and extinct taxa that reflects the historical genealogy of Mammalia.

In 1997 who revised the classification of mammals?
Output: Malcolm C. McKenna and Susan K. Bell

Input: Article: In species which show a distinct difference between heartwood and sapwood the natural color of heartwood is usually darker than that of the sapwood, and very frequently the contrast is conspicuous (see section of yew log above). This is produced by deposits in the heartwood of chemical substances, so that a dramatic color difference does not mean a dramatic difference in the mechanical properties of heartwood and sapwood, although there may be a dramatic chemical difference.

Now answer this question: What type of properties of heartwood and sapwood is often the same even if their colors are very different?

Output: mechanical

Article: The Pali Tipitaka is the only early Tipitaka (Sanskrit: Tripitaka) to survive intact in its original language, but a number of early schools had their own recensions of the Tipitaka featuring much of the same material. We have portions of the Tipitakas of the Sarvastivada, Dharmaguptaka, Sammitya, Mahasanghika, Kasyapiya, and Mahisasaka schools, most of which survive in Chinese translation only. According to some sources, some early schools of Buddhism had five or seven pitakas.

Question: Is is said that some early schools of buddhism had how many pitakas?
Ans: five or seven

Input: Pub
Quality dropped but variety increased with the introduction of microwave ovens and freezer food. "Pub grub" expanded to include British food items such as steak and ale pie, shepherd's pie, fish and chips, bangers and mash, Sunday roast, ploughman's lunch, and pasties. In addition, dishes such as burgers, chicken wings, lasagne and chilli con carne are often served. Some pubs offer elaborate hot and cold snacks free to customers at Sunday lunchtimes, to prevent them getting hungry and leaving for their lunch at home.

What culture's cuisine is ploughman's lunch a part of?
Output:
British