Input: Read this: During the Gilded Age, there was substantial growth in population in the United States and extravagant displays of wealth and excess of America's upper-class during the post-Civil War and post-Reconstruction era, in the late 19th century. The wealth polarization derived primarily from industrial and population expansion. The businessmen of the Second Industrial Revolution created industrial towns and cities in the Northeast with new factories, and contributed to the creation of an ethnically diverse industrial working class which produced the wealth owned by rising super-rich industrialists and financiers called the "robber barons". An example is the company of John D. Rockefeller, who was an important figure in shaping the new oil industry. Using highly effective tactics and aggressive practices, later widely criticized, Standard Oil absorbed or destroyed most of its competition.
Question: What type of practices did John D. Rockefeller exhibit in the oil industry?

Output: effective tactics and aggressive practices

Input: Read this: In the floor, just inside the great west door, in the centre of the nave, is the tomb of The Unknown Warrior, an unidentified British soldier killed on a European battlefield during the First World War. He was buried in the abbey on 11 November 1920. This grave is the only one in the abbey on which it is forbidden to walk.[citation needed]
Question: Whose grave is the only one in the abbey on which it is encouraged to walk?

Output: unanswerable

Input: Read this: 31st Street begins on the West Side at the West Side Yard, while 32nd Street, which includes a segment officially known as Korea Way between Fifth Avenue and Broadway in Manhattan's Koreatown, begins at the entrance to Penn Station and Madison Square Garden. On the East Side, both streets end at Second Avenue at Kips Bay Towers and NYU Medical Center which occupy the area between 30th and 34th Streets. The Catholic church of St. Francis of Assisi is situated at 135139 West 31st Street. At 210 West is the Capuchin Monastery of St. John the Baptist, part of St. John the Baptist Church on 30th Street. At the corner of Broadway and West 31st Street is the Grand Hotel. The former Hotel Pierrepont was located at 43 West 32nd Street, The Continental NYC tower is at the corner of Sixth Avenue and 32nd Street. 29 East 32nd Street was the location of the first building owned by the Grolier Club between 1890 and 1917.
Question: Which church is situated at 135-139 West 31st Street?

Output: Catholic church of St. Francis of Assisi

Input: Read this: Nociceptive pain is caused by stimulation of peripheral nerve fibers that respond to stimuli approaching or exceeding harmful intensity (nociceptors), and may be classified according to the mode of noxious stimulation. The most common categories are "thermal" (e.g. heat or cold), "mechanical" (e.g. crushing, tearing, shearing, etc.) and "chemical" (e.g. iodine in a cut or chemicals released during inflammation). Some nociceptors respond to more than one of these modalities and are consequently designated polymodal.
Question: What type of pain is caused by stimulation of fiber?

Output:
unanswerable