This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.
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Question: Passage: Uranium is a naturally occurring element that can be found in low levels within all rock, soil, and water. Uranium is the 51st element in order of abundance in the Earth's crust. Uranium is also the highest-numbered element to be found naturally in significant quantities on Earth and is almost always found combined with other elements. Along with all elements having atomic weights higher than that of iron, it is only naturally formed in supernovae. The decay of uranium, thorium, and potassium-40 in the Earth's mantle is thought to be the main source of heat that keeps the outer core liquid and drives mantle convection, which in turn drives plate tectonics. Question: Where does uranium rank among elements in terms of its abundance in the Earth's crust?

Answer: 51st


Question: Passage: Jehovah's Witnesses believe their religion is a restoration of first-century Christianity. Doctrines of Jehovah's Witnesses are established by the Governing Body, which assumes responsibility for interpreting and applying scripture. The Governing Body does not issue any single, comprehensive "statement of faith", but prefers to express its doctrinal position in a variety of ways through publications published by the Watch Tower Society. Their publications teach that doctrinal changes and refinements result from a process of progressive revelation, in which God gradually reveals his will and purpose, and that such enlightenment or "new light" results from the application of reason and study, the guidance of the holy spirit, and direction from Jesus Christ and angels. The Society also teaches that members of the Governing Body are helped by the holy spirit to discern "deep truths", which are then considered by the entire Governing Body before it makes doctrinal decisions. The religion's leadership, while disclaiming divine inspiration and infallibility, is said to provide "divine guidance" through its teachings described as "based on God's Word thus ... not from men, but from Jehovah." Question: Where does the Governing Body express its doctrinal position?

Answer: through publications published by the Watch Tower Society


Question: Passage: To allow for agricultural development of the Great Plains and house a growing population, the US passed the Homestead Acts of 1862: it allowed a settler to claim up to 160 acres (65 ha) of land, provided that he lived on it for a period of five years and cultivated it. The provisions were expanded under the Kinkaid Act of 1904 to include a homestead of an entire section. Hundreds of thousands of people claimed such homesteads, sometimes building sod houses out of the very turf of their land. Many of them were not skilled dryland farmers and failures were frequent. Much of the Plains were settled during relatively wet years. Government experts did not understand how farmers should cultivate the prairies and gave advice counter to what would have worked[citation needed]. Germans from Russia who had previously farmed, under similar circumstances, in what is now Ukraine were marginally more successful than other homesteaders. The Dominion Lands Act of 1871 served a similar function for establishing homesteads on the prairies in Canada. Question: the dominion act was passed in what year

Answer:
1871