Input: Read this: Before the introduction of the brown tree snake, Guam was home to several endemic bird species. Among them were the Guam rail (or ko'ko' bird in Chamorro) and the Guam flycatcher, both common throughout the island. Today the flycatcher is entirely extinct while the Guam rail is extinct in the wild but bred in captivity by the Division of Aquatic and Wildlife Resources. The devastation caused by the snake has been significant over the past several decades. As many as twelve bird species are believed to have been driven to extinction. According to many elders, ko'ko' birds were common in Guam before World War II.
Question: What is thought to have been the first bird species on Guam?

Output: unanswerable

QUES: On February 8, 1955, Malenkov was officially demoted to deputy Prime Minister. As First Secretary of the Central Committee of the Communist Party, Nikita Khrushchev's authority was significantly enhanced by Malenkov's demotion.

Who was demoted on February 8, 1945?
What is the answer?
ANS: unanswerable

QUES: In January 2010, YouTube launched an experimental version of the site that used the built-in multimedia capabilities of web browsers supporting the HTML5 standard. This allowed videos to be viewed without requiring Adobe Flash Player or any other plug-in to be installed. The YouTube site had a page that allowed supported browsers to opt into the HTML5 trial. Only browsers that supported HTML5 Video using the H.264 or WebM formats could play the videos, and not all videos on the site were available.
What was the main benefit from the switch to HTML4?

ANS: unanswerable

In response to the 1966 ruling by the International Court of Justice, South-West Africa People's Organisation (SWAPO) military wing, People's Liberation Army of Namibia, a guerrilla group began their armed struggle for independence, but it was not until 1988 that South Africa agreed to end its occupation of Namibia, in accordance with a UN peace plan for the entire region. During the South African occupation of Namibia, white commercial farmers, most of whom came as settlers from South Africa and represented 0.2% of the national population, owned 74% of the arable land. Outside the central-southern area of Namibia (known as the "Police Zone" since the German era and which contained the main towns, industries, mines and best arable land), the country was divided into "homelands", the version of South African bantustan applied to Namibia, although only a few were actually established because indigenous Namibians often did not cooperate.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Why did South Africa end occupation in Namibia?
Ah, so.. UN peace plan

Question: A cappella has been used as the sole orchestration for original works of musical theater that have had commercial runs Off-Broadway (theaters in New York City with 99 to 500 seats) only four times. The first was Avenue X which opened on 28 January 1994 and ran for 77 performances. It was produced by Playwrights Horizons with book by John Jiler, music and lyrics by Ray Leslee. The musical style of the show's score was primarily Doo-Wop as the plot revolved around Doo-Wop group singers of the 1960s.
Try to answer this question if possible: For how many performances did Playwrights Horizons run?
Answer: unanswerable

Input: Read this: Ongoing political tensions between Great Britain and the thirteen colonies reached a crisis in 1774 when the British placed the province of Massachusetts under martial law after the Patriots protested taxes they regarded as a violation of their constitutional rights as Englishmen. When shooting began at Lexington and Concord in April 1775, militia units from across New England rushed to Boston and bottled up the British in the city. The Continental Congress appointed George Washington as commander-in-chief of the newly created Continental Army, which was augmented throughout the war by colonial militia. He drove the British out of Boston but in late summer 1776 they returned to New York and nearly captured Washington's army. Meanwhile, the revolutionaries expelled British officials from the 13 states, and declared themselves an independent nation on July 4, 1776.
Question: When did Britain declare martial law in a South American colony?

Output:
unanswerable