Question: Read this and answer the question

Evaporation and sublimation into a vacuum is called outgassing. All materials, solid or liquid, have a small vapour pressure, and their outgassing becomes important when the vacuum pressure falls below this vapour pressure. In man-made systems, outgassing has the same effect as a leak and can limit the achievable vacuum. Outgassing products may condense on nearby colder surfaces, which can be troublesome if they obscure optical instruments or react with other materials. This is of great concern to space missions, where an obscured telescope or solar cell can ruin an expensive mission.

Why can outgassing products ruin a space mission?
Answer: obscure optical instruments


Problem: 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.
What is Paris' peak population?
The answer is the following: 2.9 million


As Ashkenazi Jews moved away from Europe, mostly in the form of aliyah to Israel, or immigration to North America, and other English-speaking areas; and Europe (particularly France) and Latin America, the geographic isolation that gave rise to Ashkenazim has given way to mixing with other cultures, and with non-Ashkenazi Jews who, similarly, are no longer isolated in distinct geographic locales. Hebrew has replaced Yiddish as the primary Jewish language for many Ashkenazi Jews, although many Hasidic and Hareidi groups continue to use Yiddish in daily life. (There are numerous Ashkenazi Jewish anglophones and Russian-speakers as well, although English and Russian are not originally Jewish languages.)
What two groups continue to use Yiddish in daily life?
many Hasidic and Hareidi groups


Input: Oklahoma City
Other theaters include Lyric Theatre, Jewel Box Theatre, Kirkpatrick Auditorium, the Poteet Theatre, the Oklahoma City Community College Bruce Owen Theater and the 488-seat Petree Recital Hall, at the Oklahoma City University campus. The university also opened the Wanda L Bass School of Music and auditorium in April 2006.

When was the Wanda L Bass School of Music and auditorium opened?
Output: April 2006


Input: Article: Since 1934, the sale of Federal Duck Stamps has generated $670 million, and helped to purchase or lease 5,200,000 acres (8,100 sq mi; 21,000 km2) of habitat. The stamps serve as a license to hunt migratory birds, an entrance pass for all National Wildlife Refuge areas, and are also considered collectors items often purchased for aesthetic reasons outside of the hunting and birding communities. Although non-hunters buy a significant number of Duck Stamps, eighty-seven percent of their sales are contributed by hunters, which is logical, as hunters are required to purchase them. Distribution of funds is managed by the Migratory Bird Conservation Commission (MBCC).

Now answer this question: Who accounts for eighty-seven percent of the sale of duck stamps?

Output: hunters


Problem: One of the foundation's goals is to lower poverty by increasing the number of college graduates in the United States, and the organization has funded "Reimagining Aid Design and Delivery" grants to think tanks and advocacy organizations to produce white papers on ideas for changing the current system of federal financial aid for college students, with a goal of increasing graduation rates. One of the ways the foundation has sought to increase the number of college graduates is to get them through college faster, but that idea has received some pushback from organizations of universities and colleges.
One way to increase college graduation by the foundation is 
The answer is the following:
One of the ways the foundation has sought to increase the number of college graduates is to get them through college faster