Given the task definition, example input & output, solve the new input case.
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.
Example: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs.
Output: Who believes Fagin's gang make wallets and handkerchiefs?.
This question is based on the following sentence in the passage "He believes they make wallets and handkerchiefs". It evaluates the understanding that the pronoun "he" refers to name "Oliver". You can ask questions like this one about most pronouns in a paragraph.

New input case for you: Passage: The Hungarian Revolution of 1956 (Hungarian: 1956-os forradalom), or the Hungarian Uprising, was a nationwide revolution against the Hungarian People's Republic and its Soviet-imposed policies, lasting from 23 October until 10 November 1956. Leaderless when it first began, it was the first major threat to Soviet control since the Red Army drove Nazi Germany from its territory at the End of World War II in Europe.
The revolt began as a student protest, which attracted thousands as they marched through central Budapest to the Hungarian Parliament building, calling out on the streets using a van with loudspeakers. A student delegation, entering the radio building to try to broadcast the students' demands, was detained. When the delegation's release was demanded by the protesters outside, they were fired upon from within the building by the State Security Police, known as the AVH (acronym for Allam Vedelmi Hatosag, literally "State Protection Authority"). One student died and was wrapped in a flag and held above the crowd. This was the start of the revolution. As the news spread, disorder and violence erupted throughout the capital.
The revolt spread quickly across Hungary, and the government collapsed. Thousands organised into militias, battling the AVH and Soviet troops. Pro-Soviet communists and AVH members were often executed or imprisoned, and former political prisoners were released and armed. Radical impromptu workers' councils wrested municipal control from the ruling Hungarian Working People's Party and demanded political changes. A new government formally disbanded the AVH, declared its intention to withdraw from the Warsaw Pact and pledged to re-establish free elections. By the end of October, fighting had almost stopped, and a sense of normality began to return.
Initially appearing open to negotiating a withdrawal of Soviet forces, the Politburo changed its mind and moved to crush the revolution. On 4 November, a large Soviet force invaded Budapest and other regions of the country. The Hungarian resistance continued until 10 November. Over 2,500 Hungarians and 700 Soviet troops were killed in the conflict, and 200,000 Hungarians fled as refugees. Mass arrests and denunciations continued for months thereafter. By January 1957, the new Soviet-installed government had suppressed all public opposition. These Soviet actions, while strengthening control over the Eastern Bloc, alienated many Western Marxists, leading to splits and/or considerable losses of membership for communist parties in capitalist states.
Public discussion about the revolution was suppressed in Hungary for more than 30 years. Since the thaw of the 1980s, it has been a subject of intense study and debate. At the inauguration of the Third Hungarian Republic in 1989, 23 October was declared a national holiday.
Output:
What was leaderless when it first began?