In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Example Input: Article: The Apple iPhone's impact was widely evident at the Consumer Electronics Show, as new touch-screen devices could be found everywhere. The consumer electronics industry came unbuttoned in Las Vegas this week. At the annual Consumer Electronics Show, companies from around the world many devices boasting (...) touch - sensitive technology, rather than traditional push-button controls. Motorola, Sony, and LG Electronics all showed off touch-screen phones this week. Microsoft Chairman Bill Gates praised and offered a touch-screen computer, the Surface, related to a flat panel TV for a tabletop. Even camera makers, such as Kodak,included touch-screen LCDs in their devices. Touch-screen tech has been in use for years,but the push to develop and weave it into consumer electronics gathered steam with the June introduction of Apple's iPhone. "The touch-screen industry is really getting hot," says Jennifer Colegrove, a senior analyst at iSuppli. "Since the iPhone came out, there are a lot of companies that did not have a relationship with touch screens before that decided, 'OK, I want to make a touch screen, too.'" The touch-screen tech ecosystem now includes more than 100 companies specializing in everything from smudge-proof screens to sensors able to detect fingers before they even contact the screen. Sales of leading touch-screen technologies,such as those used in mobile phones and navigation devices,are expected to rise to $ 4.4 billion in 2012, up from $ 2.4 billion in 2006,according to iSuppli estimates.
Answer: The Apple iPhone was popular.
Example Output: What did the writer think about the Apple iPhone?

Example Input: Article: When a caterpillar feeds on a tomato leaf , the plant moves rapidly to meet with a defensive response , systematically releasing " proteinase inhibitors " -- proteins that interfere with the caterpillar's digestion -- throughout the plant , especially in the leaves . But how does the message get from the wounded leaf to the rest of the plant ? Most scientists believed the alarm was spread by chemical messengers until a team of researchers headed by David Weldon-- a biologist at the University of East Anglia in Norwich , England -- made a shocking discovery . An injured leaf , the researchers found , sends an electrical signal to warn neighboring leaves of upcoming danger . It's a " terribly tiny current " driven by an electrical potential difference of only 20 millvolts , says Weldon , who measured the voltage after electrodes were attached to the plant's surface . " Right now , all we can say is that there is a correlation , " Weldon notes . " If you wound the plant , you'll see an electrical signal accompanied by a biochemical response . " To learn more about the reaction , Weldon's team plans to insert electrodes within the pant tissue ( rather than on the surface ) to determine what's going on at the cellular level . The findings may help explain other mysteries surrounding plants . For example , many plants start to flower in springtime , as days grow longer , but plants sense the change in the day length through their leaves , while flowers begin to bloom at the buds . " There must be a signal from the leaf to the growing points , " Weldon says . " So far , no one has come up with a convincing chemical mechanism . Maybe an electrical signal is involved . "
Answer: They cure diseases by changing chemicals
Example Output: What is the function of the " proteinase inhibitors " in tomato plants ?

Example Input: Article: The day after news broke of a possible revolution in physics ----particles moving faster than light ?a scientist leading the European experiment that made the discovery calmly explained it to a standing-room- only crowd at CERN. The physicist, Dario Auterio, did not try to explain what the results might mean for the laws of physics, let alone the broader world.After an hour of technical talk, he simply said, "Therefore, we present to you today this difference, this unusualness." But what unusualness it may be.From 2009 through 2011, the massive OPERA detector buried in a mountain in Gran Sasso, Italy, recorded subatomic particles called neutrinos ( ) arriving faster than light can move in an empty space.The neutrinos generated at CERN are hardly detectably early.If confirmed, the finding would throw more than a century of physics into disorder. "If it's correct, it's _ ." said Rob Plunkett, a scientist at Fermilab, the Department of Energy physics laboratory in Illinois."We'd be looking at a whole new set of rules" for how the universe works.Those rules would bend, or possibly break, Albert Einstein's special theory of relativity, published in 1905.Basical at the time, the theory tied together space and time, matter and energy, and set a hard limit for the speed of light, later measured to be about 186, 000 miles per second. No experiment in 106 years had broken that speed limit.Physicists expect strict study to follow, which OPERA and CERN scientists welcomed. Fermilab operates a similar experiment, called MINOS, that shoots neutrinos from Illinois to an underground detector in Minnesota.In 2007, MINOS discovered a just detectable amount of faster than-light neutrinos, but the permissible difference of error was too big to "mention" , Plunkett said. Fermilab scientists will reanalyze their data, which will take six to eight months.In 2013, the MINOS detector, now offline, will restart after an upgrade.It could then offer confirmation of the results.
Answer: Because they are against the present law of physics.
Example Output:
Why are the European scientists not sure about the results of the experiment?