instruction:
This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.
question:
Tibet has some of the world's tallest mountains, with several of them making the top ten list. Mount Everest, located on the border with Nepal, is, at 8,848 metres (29,029 ft), the highest mountain on earth. Several major rivers have their source in the Tibetan Plateau (mostly in present-day Qinghai Province). These include the Yangtze, Yellow River, Indus River, Mekong, Ganges, Salween and the Yarlung Tsangpo River (Brahmaputra River). The Yarlung Tsangpo Grand Canyon, along the Yarlung Tsangpo River, is among the deepest and longest canyons in the world.
answer:
On which border of Tibet is Mount Everest located?


question:
Gaddafi was notably confrontational in his approach to foreign powers, and generally shunned western ambassadors and diplomats, believing them to be spies. He once said that HIV was "a peaceful virus, not an aggressive virus" and assured attendees at the African Union that "if you are straight you have nothing to fear from AIDS". He also said that the H1N1 influenza virus was a biological weapon manufactured by a foreign military, and he assured Africans that the tsetse fly and mosquito were "God's armies which will protect us against colonialists". Should these 'enemies' come to Africa, "they will get malaria and sleeping sickness".
answer:
What sort of virus did Gaddafi describe HIV as?


question:
After the 1969 coup, representatives of the Four Powers – France, the United Kingdom, the United States and the Soviet Union – were called to meet RCC representatives. The U.K. and U.S. quickly extended diplomatic recognition, hoping to secure the position of their military bases in Libya and fearing further instability. Hoping to ingratiate themselves with Gaddafi, in 1970 the U.S. informed him of at least one planned counter-coup. Such attempts to form a working relationship with the RCC failed; Gaddafi was determined to reassert national sovereignty and expunge what he described as foreign colonial and imperialist influences. His administration insisted that the U.S. and U.K. remove their military bases from Libya, with Gaddafi proclaiming that "the armed forces which rose to express the people's revolution [will not] tolerate living in their shacks while the bases of imperialism exist in Libyan territory." The British left in March and the Americans in June 1970.
answer:

What nations comprised the Four Powers?