Detailed Instructions: In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
Problem:Passage: One of the main results of the revolution in Zanzibar was to break the power of the Arab/Asian ruling class, who had held it for around 200 years. Despite the merger with Tanganyika, Zanzibar retained a Revolutionary Council and House of Representatives which was, until 1992, run on a one-party system and has power over domestic matters. The domestic government is led by the President of Zanzibar, Karume being the first holder of this office. This government used the success of the revolution to implement reforms across the island. Many of these involved the removal of power from Arabs. The Zanzibar civil service, for example, became an almost entirely African organisation, and land was redistributed from Arabs to Africans. The revolutionary government also instituted social reforms such as free healthcare and opening up the education system to African students (who had occupied only 12% of secondary school places before the revolution).The government sought help from the Soviet Union, the German Democratic Republic (GDR), and People's Republic of China for funding for several projects and military advice. The failure of several GDR-led projects including the New Zanzibar Project, a 1968 urban redevelopment scheme to provide new apartments for all Zanzibaris, led to Zanzibar focusing on Chinese aid. The post-revolution Zanzibar government was accused of draconian controls on personal freedoms and travel and exercised nepotism in appointments to political and industrial offices, the new Tanzanian government being powerless to intervene. Dissatisfaction with the government came to a head with the assassination of Karume on 7 April 1972, which was followed by weeks of fighting between pro- and anti-government forces. A multi-party system was eventually established in 1992, but Zanzibar remains dogged by allegations of corruption and vote-rigging, though the 2010 general election was seen to be a considerable improvement.The revolution itself remains an event of interest for Zanzibaris and academics. Historians have analysed the revolution as having a racial and a social basis, with some stating that the African revolutionaries represent the proletariat rebelling against the ruling and trading classes, represented by the Arabs and South Asians. Others discount this theory and present it as a racial revolution that was exacerbated by economic disparity between races.Within Zanzibar, the revolution is a key cultural event, marked by the release of 545 prisoners on its tenth anniversary and by a military parade on its 40th. Zanzibar Revolution Day has been designated as a public holiday by the government of Tanzania; it is celebrated on 12 January each year.
Solution:
What day is celebrated on 12 January every year in the country that was powerless to intervene and nepotism?