In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
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Question: Who detained the parents?, Context: The AP reported that "The state-controlled media has largely ignored the issue, apparently under the propaganda bureau's instructions. Parents and volunteers who have questioned authorities have been detained and threatened."

Answer: The state


Question: What type of equipment is used with liquid oxygen but not other methods of oxygen storage?, Context: Oxygen storage methods include high pressure oxygen tanks, cryogenics and chemical compounds. For reasons of economy, oxygen is often transported in bulk as a liquid in specially insulated tankers, since one liter of liquefied oxygen is equivalent to 840 liters of gaseous oxygen at atmospheric pressure and 20 °C (68 °F). Such tankers are used to refill bulk liquid oxygen storage containers, which stand outside hospitals and other institutions with a need for large volumes of pure oxygen gas. Liquid oxygen is passed through heat exchangers, which convert the cryogenic liquid into gas before it enters the building. Oxygen is also stored and shipped in smaller cylinders containing the compressed gas; a form that is useful in certain portable medical applications and oxy-fuel welding and cutting.

Answer: heat exchangers


Question: What was the quantity of humans sent forth from Russia?, Context: Two rounds of Soviet purges directed by Moscow (1927–1934 and 1937–1938) resulted in the expulsion of nearly 10,000 people, from all levels of the Communist Party of Tajikistan. Ethnic Russians were sent in to replace those expelled and subsequently Russians dominated party positions at all levels, including the top position of first secretary. Between 1926 and 1959 the proportion of Russians among Tajikistan's population grew from less than 1% to 13%. Bobojon Ghafurov, Tajikistan's First Secretary of the Communist Party of Tajikistan from 1946–1956 was the only Tajikistani politician of significance outside of the country during the Soviet Era. He was followed in office by Tursun Uljabayev (1956–61), Jabbor Rasulov (1961–1982), and Rahmon Nabiyev (1982–1985, 1991–1992).

Answer:
nearly 10,000