Input: Article: Uranium metal reacts with almost all non-metal elements (with an exception of the noble gases) and their compounds, with reactivity increasing with temperature. Hydrochloric and nitric acids dissolve uranium, but non-oxidizing acids other than hydrochloric acid attack the element very slowly. When finely divided, it can react with cold water; in air, uranium metal becomes coated with a dark layer of uranium oxide. Uranium in ores is extracted chemically and converted into uranium dioxide or other chemical forms usable in industry.

Now answer this question: What reacts with finely divided uranium?

Output: cold water

Input: Article: The epistemological tensions between scientists and universities were also heightened by the economic realities of research during this time, as individual scientists, associations and universities were vying for limited resources. There was also competition from the formation of new colleges funded by private benefactors and designed to provide free education to the public, or established by local governments to provide a knowledge hungry populace with an alternative to traditional universities. Even when universities supported new scientific endeavors, and the university provided foundational training and authority for the research and conclusions, they could not compete with the resources available through private benefactors.

Now answer this question: Scientists and universities were competing for what?

Output: limited resources

Input: Article: Motors have very little room for electrical insulation so they generally have low voltage ratings. Because transformers (prior to the development of power electronics) cannot step down DC voltages, trains were supplied with a relatively low DC voltage that the motors can use directly. The most common DC voltages are listed in the previous section. Third (and fourth) rail systems almost always use voltages below 1 kV for safety reasons while overhead wires usually use higher voltages for efficiency. ("Low" voltage is relative; even 600 V can be instantly lethal when touched.)

Now answer this question: Why 1kV voltage is almost always used by rail systems?

Output:
safety reasons