Input: Article: The population of Paris today is lower than its historical peak of 2.9 million in 1921. The principal reasons were a significant decline in household size, and a dramatic migration of residents to the suburbs between 1962 and 1975. Factors in the migration included de-industrialisation, high rent, the gentrification of many inner quarters, the transformation of living space into offices, and greater affluence among working families. The city's population loss came to an end in the 21st century; the population estimate of July 2004 showed a population increase for the first time since 1954, and the population reached 2,234,000 by 2009.

Now answer this question: What year was the first population increase since 1954?

Output: 2004

Input: Article: In 1900, after Galveston was struck by a devastating hurricane, efforts to make Houston into a viable deep-water port were accelerated. The following year, oil discovered at the Spindletop oil field near Beaumont prompted the development of the Texas petroleum industry. In 1902, President Theodore Roosevelt approved a $1 million improvement project for the Houston Ship Channel. By 1910 the city's population had reached 78,800, almost doubling from a decade before. African-Americans formed a large part of the city's population, numbering 23,929 people, or nearly one-third of the residents.

Now answer this question: In what year did Houston's population reach 78,000?

Output: 1910

Input: Article: During the 19th century, Paris was the home and subject for some of France's greatest writers, including Charles Baudelaire, Stephane Mallarme, Merimee, Alfred de Musset, Marcel Proust, Emile Zola, Alexandre Dumas, Gustave Flaubert, Guy de Maupassant and Honore de Balzac. Victor Hugo's The Hunchback of Notre Dame inspired the renovation of its setting, the Notre-Dame de Paris. Another of Victor Hugo's works, Les Miserables, written while he was in exile outside France during the Second Empire, described the social change and political turmoil in Paris in the early 1830s. One of the most popular of all French writers, Jules Verne, worked at the Theatre Lyrique and the Paris stock exchange, while he did research for his stories at the National Library.

Now answer this question: Where did Jules Verne do research for his stories?

Output:
National Library