Problem: Please answer a question about the following article about Alsace:
At about this time the surrounding areas experienced recurring fragmentation and reincorporations among a number of feudal secular and ecclesiastical lordships, a common process in the Holy Roman Empire. Alsace experienced great prosperity during the 12th and 13th centuries under Hohenstaufen emperors. Frederick I set up Alsace as a province (a procuratio, not a provincia) to be ruled by ministeriales, a non-noble class of civil servants. The idea was that such men would be more tractable and less likely to alienate the fief from the crown out of their own greed. The province had a single provincial court (Landgericht) and a central administration with its seat at Hagenau. Frederick II designated the Bishop of Strasbourg to administer Alsace, but the authority of the bishop was challenged by Count Rudolf of Habsburg, who received his rights from Frederick II's son Conrad IV. Strasbourg began to grow to become the most populous and commercially important town in the region. In 1262, after a long struggle with the ruling bishops, its citizens gained the status of free imperial city. A stop on the Paris-Vienna-Orient trade route, as well as a port on the Rhine route linking southern Germany and Switzerland to the Netherlands, England and Scandinavia, it became the political and economic center of the region. Cities such as Colmar and Hagenau also began to grow in economic importance and gained a kind of autonomy within the "Decapole" or "Dekapolis", a federation of ten free towns.
Under who's rule did Alsace thrive under?
A: Hohenstaufen emperors

Question: Read this and answer the question

These 4G languages are less procedural than 3G languages. The benefit of 4GL is that it provides ways to obtain information without requiring the direct help of a programmer. Example of 4GL is SQL.

An example of a 4GL is what?
Answer: SQL

Problem: In the shrinking PC industry, Dell continued to lose market share, as it dropped below Lenovo in 2011 to fall to number three in the world. Dell and fellow American contemporary Hewlett Packard came under pressure from Asian PC manufacturers Lenovo, Asus, and Acer, all of which had lower production costs and willing to accept lower profit margins. In addition, while the Asian PC vendors had been improving their quality and design, for instance Lenovo's ThinkPad series was winning corporate customers away from Dell's laptops, Dell's customer service and reputation had been slipping. Dell remained the second-most profitable PC vendor, as it took 13 percent of operating profits in the PC industry during Q4 2012, behind Apple Inc.'s Macintosh that took 45 percent, seven percent at Hewlett Packard, six percent at Lenovo and Asus, and one percent for Acer.
What PC was taking corporate customers from Dell?
The answer is the following: ThinkPad

Cardinal Augustin Bea, the head of the Secretariat for Promoting Christian Unity, added at the end of the visit, "Let us move forward in Christ. God wants it. Humanity is waiting for it." Unmoved by a harsh condemnation by the Congregation of Faith on mixed marriages precisely at this time of the visit, Paul VI and Ramsey appointed a preparatory commission which was to put the common agenda into practice on such issues as mixed marriages. This resulted in a joint Malta declaration, the first joint agreement on the Creed since the Reformation. Paul VI was a good friend of the Anglican Church, which he described as "our beloved sister Church". This description was unique to Paul and not used by later popes.
Who described the Anglican church as "our beloved sister Church"?
Paul VI

Input: Space Race
Salyut 1's orbit was increased to prevent premature reentry, but further piloted flights were delayed while the Soyuz was redesigned to fix the new safety problem. The station re-entered the Earth's atmosphere on October 11, after 175 days in orbit. The USSR attempted to launch a second Salyut-class station designated Durable Orbital Station-2 (DOS-2) on July 29, 1972, but a rocket failure caused it to fail to achieve orbit. After the DOS-2 failure, the USSR attempted to launch four more Salyut-class stations through 1975, with another failure due to an explosion of the final rocket stage, which punctured the station with shrapnel so that it wouldn't hold pressure. While all of the Salyuts were presented to the public as non-military scientific laboratories, some of them were actually covers for the military Almaz reconnaissance stations.

The station, Salyut 1, came back to Earth on which date?
Output: October 11

Problem: Please answer a question about the following article about Detroit:
The city has numerous neighborhoods consisting of vacant properties resulting in low inhabited density in those areas, stretching city services and infrastructure. These neighborhoods are concentrated in the northeast and on the city's fringes. A 2009 parcel survey found about a quarter of residential lots in the city to be undeveloped or vacant, and about 10% of the city's housing to be unoccupied. The survey also reported that most (86%) of the city's homes are in good condition with a minority (9%) in fair condition needing only minor repairs.
How many of Detroit's residential lots are are underdeveloped?
A:
a quarter