Input: Read this: In 200607, researchers from the Wildlife Conservation Society studied gorillas in heavily forested regions centered on the Ouesso district of the Sangha Region. They suggest a population on the order of 125,000 Western Lowland Gorillas, whose isolation from humans has been largely preserved by inhospitable swamps.
Question: In what kind of regions did researchers not find any gorillas?

Output: unanswerable

QUES: The first non-stop transatlantic crossing was made by the British airship R34 in 1919. Regular passenger service resumed in the 1920s and the discovery of helium reserves in the United States promised increased safety, but the U.S. government refused to sell the gas for this purpose. Therefore, H2 was used in the Hindenburg airship, which was destroyed in a midair fire over New Jersey on 6 May 1937. The incident was broadcast live on radio and filmed. Ignition of leaking hydrogen is widely assumed to be the cause, but later investigations pointed to the ignition of the aluminized fabric coating by static electricity. But the damage to hydrogen's reputation as a lifting gas was already done.

What year did the airship get destroyed?
What is the answer?
ANS: 1937

QUES: Copper, silver and gold are in group 11 of the periodic table, and they share certain attributes: they have one s-orbital electron on top of a filled d-electron shell and are characterized by high ductility and electrical conductivity. The filled d-shells in these elements do not contribute much to the interatomic interactions, which are dominated by the s-electrons through metallic bonds. Unlike metals with incomplete d-shells, metallic bonds in copper are lacking a covalent character and are relatively weak. This explains the low hardness and high ductility of single crystals of copper. At the macroscopic scale, introduction of extended defects to the crystal lattice, such as grain boundaries, hinders flow of the material under applied stress, thereby increasing its hardness. For this reason, copper is usually supplied in a fine-grained polycrystalline form, which has greater strength than monocrystalline forms.
What makes copper bondings stronger than other metals?

ANS: unanswerable

The Schnellweg (en: expressway) system, a number of Bundesstrae roads, forms a structure loosely resembling a large ring road together with A2 and A7. The roads are B 3, B 6 and B 65, called Westschnellweg (B6 on the northern part, B3 on the southern part), Messeschnellweg (B3, becomes A37 near Burgdorf, crosses A2, becomes B3 again, changes to B6 at Seelhorster Kreuz, then passes the Hanover fairground as B6 and becomes A37 again before merging into A7) and Sudschnellweg (starts out as B65, becomes B3/B6/B65 upon crossing Westschnellweg, then becomes B65 again at Seelhorster Kreuz).
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What road is called the B6 on the southern part?
Ah, so.. unanswerable

Question: Hard rock developed into a major form of popular music in the 1970s, with bands such as Led Zeppelin, The Who, Deep Purple, Aerosmith, AC/DC and Van Halen. During the 1980s, some hard rock bands moved away from their hard rock roots and more towards pop rock, while others began to return to a hard rock sound. Established bands made a comeback in the mid-1980s and it reached a commercial peak in the 1980s, with glam metal bands like Bon Jovi and Def Leppard and the rawer sounds of Guns N' Roses, which followed up with great success in the later part of that decade. Hard rock began losing popularity with the commercial success of grunge and later Britpop in the 1990s.
Try to answer this question if possible: What two genres cut into hard rock's popularity at the end of the 1980s and early 1990s?
Answer: grunge and later Britpop

Problem: The report "Mary: Faith and Hope in Christ", by the Anglican-Roman Catholic International Commission, concluded that the teaching about Mary in the two definitions of the Assumption and the Immaculate Conception can be said to be consonant with the teaching of the Scriptures and the ancient common traditions. But the report expressed concerns that the Roman Catholic dogmatic definitions of these concepts implies them to be "revealed by God", stating: "The question arises for Anglicans, however, as to whether these doctrines concerning Mary are revealed by God in a way which must be held by believers as a matter of faith."
What doctrine do Anlicans believe is a matte5r of faith?
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Answer:
unanswerable