Article: In comparison to the principal alternative, the diesel engine, electric railways offer substantially better energy efficiency, lower emissions and lower operating costs. Electric locomotives are usually quieter, more powerful, and more responsive and reliable than diesels. They have no local emissions, an important advantage in tunnels and urban areas. Some electric traction systems provide regenerative braking that turns the train's kinetic energy back into electricity and returns it to the supply system to be used by other trains or the general utility grid. While diesel locomotives burn petroleum, electricity is generated from diverse sources including many that do not produce carbon dioxide such as nuclear power and renewable forms including hydroelectric, geothermal, wind and solar.

Question: What is the principal alternative to electric railways?
Ans: diesel engine

Here is a question about this article: An upscale lifestyle publication called Slice Magazine is circulated throughout the metropolitan area. In addition, there is a magazine published by Back40 Design Group called The Edmond Outlook. It contains local commentary and human interest pieces direct-mailed to over 50,000 Edmond residents.
What is the answer to this question: What is another magazine that is published in Oklahoma City?
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So... Back40

The problem: Answer a question about this article:
In cosmology and astronomy the phenomena of stars, nova, supernova, quasars and gamma-ray bursts are the universe's highest-output energy transformations of matter. All stellar phenomena (including solar activity) are driven by various kinds of energy transformations. Energy in such transformations is either from gravitational collapse of matter (usually molecular hydrogen) into various classes of astronomical objects (stars, black holes, etc.), or from nuclear fusion (of lighter elements, primarily hydrogen). The nuclear fusion of hydrogen in the Sun also releases another store of potential energy which was created at the time of the Big Bang. At that time, according to theory, space expanded and the universe cooled too rapidly for hydrogen to completely fuse into heavier elements. This meant that hydrogen represents a store of potential energy that can be released by fusion. Such a fusion process is triggered by heat and pressure generated from gravitational collapse of hydrogen clouds when they produce stars, and some of the fusion energy is then transformed into sunlight.
What releases another store of potential energy which was created at the time of the Big Bang?
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The answer: nuclear fusion of hydrogen in the Sun

Problem: Please answer a question about the following article about Punjab, Pakistan:
Despite its tropical wet and dry climate, extensive irrigation makes it a rich agricultural region. Its canal-irrigation system established by the British is the largest in the world. Wheat and cotton are the largest crops. Other crops include rice, sugarcane, millet, corn, oilseeds, pulses, vegetables, and fruits such as kinoo. Livestock and poultry production are also important. Despite past animosities, the rural masses in Punjab's farms continue to use the Hindu calendar for planting and harvesting.
What are Punjab's secondary crops?
A: rice, sugarcane, millet, corn, oilseeds, pulses, vegetables, and fruits such as kinoo

Question: Read this and answer the question

Some "popular" genre musicians have had significant classical training, such as Billy Joel, Elton John, the Van Halen brothers, Randy Rhoads and Ritchie Blackmore. Moreover, formal training is not unique to the classical genre. Many rock and pop musicians have completed degrees in commercial music programs such as those offered by the Berklee College of Music and many jazz musicians have completed degrees in music from universities with jazz programs, such as the Manhattan School of Music and McGill University.

Billy Joel and Elton John have both had what type of training?
Answer: classical

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.
Scientists and universities were competing for what?
limited resources