Input: Article: Like most of southern California, the majority of San Diego's current area was originally occupied by chaparral, a plant community made up mostly of drought-resistant shrubs. The endangered Torrey pine has the bulk of its population in San Diego in a stretch of protected chaparral along the coast. The steep and varied topography and proximity to the ocean create a number of different habitats within the city limits, including tidal marsh and canyons. The chaparral and coastal sage scrub habitats in low elevations along the coast are prone to wildfire, and the rates of fire have increased in the 20th century, due primarily to fires starting near the borders of urban and wild areas.

Now answer this question: How is San Diego able to offer everything from tidal marsh to canyons?

Output: The steep and varied topography and proximity to the ocean create a number of different habitats

Article: Although provision is made in Title 10 of the United States Code for the Secretary of the Air Force to appoint warrant officers, the Air Force does not currently use warrant officer grades, and is the only one of the U.S. Armed Services not to do so. The Air Force inherited warrant officer ranks from the Army at its inception in 1947, but their place in the Air Force structure was never made clear.[citation needed] When the Congress authorized the creation of two new senior enlisted ranks in 1958, Air Force officials privately concluded that these two new "super grades" could fill all Air Force needs then performed at the warrant officer level, although this was not publicly acknowledged until years later.[citation needed] The Air Force stopped appointing warrant officers in 1959, the same year the first promotions were made to the new top enlisted grade, Chief Master Sergeant. Most of the existing Air Force warrant officers entered the commissioned officer ranks during the 1960s, but small numbers continued to exist in the warrant officer grades for the next 21 years.

Question: What section in the US Code for the Secretary of the Air Force allows for the appointment of warrant officers?
Ans: Title 10

Here is a question about this article: SVCD has two-thirds the resolution of DVD, and over 2.7 times the resolution of VCD. One CD-R disc can hold up to 60 minutes of standard quality SVCD-format video. While no specific limit on SVCD video length is mandated by the specification, one must lower the video bit rate, and therefore quality, to accommodate very long videos. It is usually difficult to fit much more than 100 minutes of video onto one SVCD without incurring significant quality loss, and many hardware players are unable to play video with an instantaneous bit rate lower than 300 to 600 kilobits per second.
What is the answer to this question: How are lengthy videos fit onto SVCDs?
****
So... lower the video bit rate

The problem: Answer a question about this article:
The first railways in Thuringia had been built in the 1840s and the network of main lines was finished around 1880. By 1920, many branch lines had been built, giving Thuringia one of the densest rail networks in the world before World War II with about 2,500 km of track. Between 1950 and 2000 most of the branch lines were abandoned, reducing Thuringia's network by half compared to 1940. On the other hand, most of the main lines were refurbished after 1990, resulting in improved speed of travel. The most important railway lines at present are the Thuringian Railway, connecting Halle and Leipzig via Weimar, Erfurt, Gotha and Eisenach with Frankfurt and Kassel and the Saal Railway from Halle/Leipzig via Jena and Saalfeld to Nuremberg. The former has an hourly ICE/IC service from Dresden to Frankfurt while the latter is served hourly by ICE trains from Berlin to Munich. In 2017, a new high speed line will be opened, diverting long-distance services from these mid-19th century lines. Both ICE routes will then use the ErfurtLeipzig/Halle high-speed railway, and the Berlin-Munich route will continue via the NurembergErfurt high-speed railway. Only the segment west of Erfurt of the Frankfurt-Dresden line will continue to be used by ICE trains after 2017, with an increased line speed of 200 km/h (currently 160 km/h). Erfurt's central station, which was completely rebuilt for this purpose in the 2000s (decade), will be the new connection between both ICE lines. The most important regional railway lines in Thuringia are the NeudietendorfRitschenhausen railway from Erfurt to Wurzburg and Meiningen, the WeimarGera railway from Erfurt to Chemnitz, the SangerhausenErfurt railway from Erfurt to Magdeburg, the GothaLeinefelde railway from Erfurt to Gottingen, the HalleKassel railway from Halle via Nordhausen to Kassel and the LeipzigHof railway from Leipzig via Altenburg to Zwickau and Hof. Most regional and local lines have hourly service, but some run only every other hour.
When was Thuringia's first railway built?
****
The answer: the 1840s

Problem: Please answer a question about the following article about Imperial College London:
The Centre For Co-Curricular Studies provides elective subjects and language courses outside the field of science for students in the other faculties and departments. Students are encouraged to take these classes either for credit or in their own time, and in some departments this is mandatory. Courses exist in a wide range of topics including philosophy, ethics in science and technology, history, modern literature and drama, art in the 20th century, film studies. Language courses are available in French, German, Japanese, Italian, Russian, Spanish, Arabic and Mandarin Chinese. The Centre For Co-Curricular Studies is home to the Science Communication Unit which offers master's degrees in Science Communication and Science Media Production for science graduates.
Which centre provides electives outside of science for students?
A: Centre For Co-Curricular Studies

Question: Read this and answer the question

Independent city states were unable to compete with Hellenistic kingdoms and were usually forced to ally themselves to one of them for defense, giving honors to Hellenistic rulers in return for protection. One example is Athens, which had been decisively defeated by Antipater in the Lamian war (323-322) and had its port in the Piraeus garrisoned by Macedonian troops who supported a conservative oligarchy. After Demetrius Poliorcetes captured Athens in 307 and restored the democracy, the Athenians honored him and his father Antigonus by placing gold statues of them on the agora and granting them the title of king. Athens later allied itself to Ptolemaic Egypt to throw off Macedonian rule, eventually setting up a religious cult for the Ptolemaic kings and naming one of the city phyles in honor of Ptolemy for his aid against Macedon. In spite of the Ptolemaic monies and fleets backing their endeavors, Athens and Sparta were defeated by Antigonus II during the Chremonidean War (267-61). Athens was then occupied by Macedonian troops, and run by Macedonian officials.

When did Demetrius Poliorcetes capture Athens?
Answer:
307