Input: Railway electrification system
Some street trams (streetcars) used conduit third-rail current collection. The third rail was below street level. The tram picked up the current through a plough (U.S. "plow") accessed through a narrow slot in the road. In the United States, much (though not all) of the former streetcar system in Washington, D.C. (discontinued in 1962) was operated in this manner to avoid the unsightly wires and poles associated with electric traction. The same was true with Manhattan's former streetcar system. The evidence of this mode of running can still be seen on the track down the slope on the northern access to the abandoned Kingsway Tramway Subway in central London, United Kingdom, where the slot between the running rails is clearly visible, and on P and Q Streets west of Wisconsin Avenue in the Georgetown neighborhood of Washington DC, where the abandoned tracks have not been paved over. The slot can easily be confused with the similar looking slot for cable trams/cars (in some cases, the conduit slot was originally a cable slot). The disadvantage of conduit collection included much higher initial installation costs, higher maintenance costs, and problems with leaves and snow getting in the slot. For this reason, in Washington, D.C. cars on some lines converted to overhead wire on leaving the city center, a worker in a "plough pit" disconnecting the plough while another raised the trolley pole (hitherto hooked down to the roof) to the overhead wire. In New York City for the same reasons of cost and operating efficiency outside of Manhattan overhead wire was used. A similar system of changeover from conduit to overhead wire was also used on the London tramways, notably on the southern side; a typical changeover point was at Norwood, where the conduit snaked sideways from between the running rails, to provide a park for detached shoes or ploughs.

What area in US discontinued using overhead wires for streetcars in 1962?
Output: Washington, D.C.

Input: Article: After a lackluster arrival to Oklahoma City for the 200809 season, the Oklahoma City Thunder secured a berth (8th) in the 2010 NBA Playoffs the next year after boasting its first 50-win season, winning two games in the first round against the Los Angeles Lakers. In 2012, Oklahoma City made it to the NBA Finals, but lost to the Miami Heat in five games. In 2013 the Thunder reached the Western Conference semifinals without All-Star guard Russell Westbrook, who was injured in their first round series against the Houston Rockets, only to lose to the Memphis Grizzlies. In 2014 Oklahoma City again reached the NBA's Western Conference Finals but eventually lost to the San Antonio Spurs in six games.

Now answer this question: Who did the Thunder play in the finals of 2012?

Output: Miami Heat

Article: In Ancient Rome, Tyrian purple was the color of the Emperor, but red had an important religious symbolism. Romans wore togas with red stripes on holidays, and the bride at a wedding wore a red shawl, called a flammeum. Red was used to color statues and the skin of gladiators. Red was also the color associated with army; Roman soldiers wore red tunics, and officers wore a cloak called a paludamentum which, depending upon the quality of the dye, could be crimson, scarlet or purple. In Roman mythology red is associated with the god of war, Mars. The vexilloid of the Roman Empire had a red background with the letters SPQR in gold. A Roman general receiving a triumph had his entire body painted red in honor of his achievement.

Question: After what event would a general of the Roman army be painted red?
Ans: triumph

Here is a question about this article: Jantar Mantar located in Connaught Place was built by Maharaja Jai Singh II of Jaipur. It consists of 13 architectural astronomy instruments. The primary purpose of the observatory was to compile astronomical tables, and to predict the times and movements of the sun, moon and planets.
What is the answer to this question: Who was responsible for constructing the Jantar Mantar?
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So... Maharaja Jai Singh II of Jaipur

The problem: Answer a question about this article:
The English term polytechnic appeared in the early 19th century, from the French Ecole Polytechnique, an engineering school founded in 1794 in Paris. The French term comes from the Greek (polu or poly) meaning "many" and (tekhnikos) meaning "arts".
What school founded in 1794 first used a form of the word polytechnic in its name?
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The answer: Ecole Polytechnique

The problem: Answer a question about this article:
Old English nouns had grammatical gender, a feature absent in modern English, which uses only natural gender. For example, the words sunne ("sun"), mona ("moon") and wif ("woman/wife") were respectively feminine, masculine and neuter; this is reflected, among other things, in the form of the definite article used with these nouns: seo sunne ("the sun"), se mona ("the moon"), t wif ("the woman/wife"). Pronoun usage could reflect either natural or grammatical gender, when those conflicted (as in the case of wif, a neuter noun referring to a female person).
What type of gender did Old English nouns possess?
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The answer:
grammatical