Problem: Houston:

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.

Who approved the improvement project for the Houston ship channel?
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A: President Theodore Roosevelt

Problem: A distinct Greek political identity re-emerged in the 11th century in educated circles and became more forceful after the fall of Constantinople to the Crusaders of the Fourth Crusade in 1204, so that when the empire was revived in 1261, it became in many ways a Greek national state. That new notion of nationhood engendered a deep interest in the classical past culminating in the ideas of the Neoplatonist philosopher Gemistus Pletho, who abandoned Christianity. However, it was the combination of Orthodox Christianity with a specifically Greek identity that shaped the Greeks' notion of themselves in the empire's twilight years. The interest in the Classical Greek heritage was complemented by a renewed emphasis on Greek Orthodox identity, which was reinforced in the late Medieval and Ottoman Greeks' links with their fellow Orthodox Christians in the Russian Empire. These were further strengthened following the fall of the Empire of Trebizond in 1461, after which and until the second Russo-Turkish War of 1828-29 hundreds of thousands of Pontic Greeks fled or migrated from the Pontic Alps and Armenian Highlands to southern Russia and the Russian South Caucasus (see also Greeks in Russia, Greeks in Armenia, Greeks in Georgia, and Caucasian Greeks).
Which factoring war was on gong in 1828 and shares the of a previous scuttle ? ?
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Answer: second Russo-Turkish War

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In addition to such annual festivals like Calle Ocho Festival and Carnaval Miami, Miami is home to many entertainment venues, theaters, museums, parks and performing arts centers. The newest addition to the Miami arts scene is the Adrienne Arsht Center for the Performing Arts, the second-largest performing arts center in the United States after the Lincoln Center in New York City, and is the home of the Florida Grand Opera. Within it are the Ziff Ballet Opera House, the center's largest venue, the Knight Concert Hall, the Carnival Studio Theater and the Peacock Rehearsal Studio. The center attracts many large-scale operas, ballets, concerts, and musicals from around the world and is Florida's grandest performing arts center. Other performing arts venues in Miami include the Gusman Center for the Performing Arts, Coconut Grove Playhouse, Colony Theatre, Lincoln Theatre, New World Center, Actor's Playhouse at the Miracle Theatre, Jackie Gleason Theatre, Manuel Artime Theater, Ring Theatre, Playground Theatre, Wertheim Performing Arts Center, the Fair Expo Center and the Bayfront Park Amphitheater for outdoor music events.
What is the largest performing arts center in the UN?
A: unanswerable

Context and question: When the British invaded the harbour town in 1744[verification needed], the town's architectural buildings were destroyed[verification needed]. Subsequently, new structures were built in the town around the harbour area[verification needed] and the Swedes had also further added to the architectural beauty of the town in 1785 with more buildings, when they had occupied the town. Earlier to their occupation, the port was known as "Carenage". The Swedes renamed it as Gustavia in honour of their king Gustav III. It was then their prime trading center. The port maintained a neutral stance since the Caribbean war was on in the 18th century. They used it as trading post of contraband and the city of Gustavia prospered but this prosperity was short lived.
In what year did King Gustav III begin his reign?
Answer: unanswerable

Question: On August 17, 2011, Shueisha's V-Jump magazine announced a sequel set one year later, a third arc of Xros Wars subtitled The Young Hunters Who Leapt Through Time, which aired from October 2, 2011 to March 25, 2012, following on from the previous arc. It focuses on a new protagonist, Tagiru Akashi and his partner Gumdramon who embark on a new journey with an older Mikey, Shoutmon, an older Ewan and the revived Damemon, along with other new comrades as they deal with a hidden dimension that lies between the Human World and the Digital World called DigiQuartz. The series finale reintroduces the heroes of the previous five seasons as they all come together and help the current heroes in the final battle due to the fact that the DigiQuartz is essentially a tear in Space and Time, allowing all of the Digimon universes to converge.
Is there an answer to this question: What causes all the Digimon universe to scatter?

Answer: unanswerable

Problem: ASCII:

For example, character 10 represents the "line feed" function (which causes a printer to advance its paper), and character 8 represents "backspace". RFC 2822 refers to control characters that do not include carriage return, line feed or white space as non-whitespace control characters. Except for the control characters that prescribe elementary line-oriented formatting, ASCII does not define any mechanism for describing the structure or appearance of text within a document. Other schemes, such as markup languages, address page and document layout and formatting.

What does character 8 represent?
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A:
backspace