Problem: The game Total War: Shogun 2 has the Rise of the Samurai expansion pack as downloadable campaign. It allows the player to make their own version of the Gempei War which happened during the Heian period. The player is able to choose one of the most powerful families of Japan at the time, the Taira, Minamoto or Fujiwara; each family fielding two branches for a total of six playable clans. The expansion pack features a different set of land units, ships and buildings and is also playable in the multiplayer modes.
What families are playable characters in Total War: Shogun 2?
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Answer: Taira, Minamoto or Fujiwara


Problem: The area near the border with Cameroon close to the coast is rich rainforest and part of the Cross-Sanaga-Bioko coastal forests ecoregion, an important centre for biodiversity. It is habitat for the drill monkey, which is found in the wild only in this area and across the border in Cameroon. The areas surrounding Calabar, Cross River State, also in this forest, are believed to contain the world's largest diversity of butterflies. The area of southern Nigeria between the Niger and the Cross Rivers has lost most of its forest because of development and harvesting by increased population, with it being replaced by grassland (see Cross-Niger transition forests).
What type of monkey is only found in parts of Nigeria and Cameroon?
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Answer: the drill monkey


Problem: In 1972, the French physicist Francis Perrin discovered fifteen ancient and no longer active natural nuclear fission reactors in three separate ore deposits at the Oklo mine in Gabon, West Africa, collectively known as the Oklo Fossil Reactors. The ore deposit is 1.7 billion years old; then, uranium-235 constituted about 3% of the total uranium on Earth. This is high enough to permit a sustained nuclear fission chain reaction to occur, provided other supporting conditions exist. The capacity of the surrounding sediment to contain the nuclear waste products has been cited by the U.S. federal government as supporting evidence for the feasibility to store spent nuclear fuel at the Yucca Mountain nuclear waste repository.
How old are the ore deposits in the Oslo mine?
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Answer:
unanswerable