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.

Input: Consider Input: 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?

Output: 51st

Input: Consider Input: Passage: Droney's health was poor and Kerry had decided to run for his position in the 1978 election should Droney drop out. However, Droney was re-elected and his health improved; he went on to re-assume many of the duties that he had delegated to Kerry. Kerry thus decided to leave, departing in 1979 with assistant DA Roanne Sragow to set up their own law firm. Kerry also worked as a commentator for WCVB-TV and co-founded a bakery, Kilvert & Forbes Ltd., with businessman and former Kennedy aide K. Dun Gifford. Question: Who left the DA's office with Kerry?

Output: Roanne Sragow

Input: Consider Input: Passage: In mid-2015 the government of Zhejiang recognised folk religion as "civil religion" beginning the registration of more than twenty thousand folk religious associations. Buddhism has an important presence since its arrival in Zhejiang 1,800 years ago. Question: What has an important presence in Zhejiang since its arrival 1,800 years ago?
Output: Buddhism