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.

[EX Q]: Article: As a young girl, Margaret "Mattie" Knight never played with dolls, preferring to make toys for her brothers instead. In 1849, Knight went to work in a cotton factory where she witnessed a "shuttle," a device that carries thread back and forth across a textile loom , fly off the machine when the thread broke, striking and killing a young boy about her own age. The 12-year-old Knight developed a safety mechanism that made it impossible for a shuttle to leave the loom. The design was so effective, soon virtually every new power loom carried her invention, saving countless workers from injury or death. Being so young, she didn't bother to patent the device, so she never received payment. Knight wouldn't make the same mistake later in life when she invented a machine that could produce flat-bottomed paper bags. Knight had built a small wooden model in her home, but she needed a metal version to show it could hold up to the stress of mass production. So she hired Charles Annan to make the full-sized machine for her, only to have him try to claim the patent for himself. When Knight sued , Annan's argument was that the design had to be his, because no woman could possibly understand the complex mechanics. Knight proved him wrong when she brought back her wooden prototype and explained how every part worked. She won the case in 1871, making her the second woman to hold an American patent. Over a hundred years later, her design is still used as the basis for many modern flat-bottom bag machines. But that wasn't the last the world heard of Mattie Knight. During her lifetime, she made about 90 inventions and received 26 patents, becoming one of the most productive female inventors of the 19th century.
Answer: It reduced injuries at textile plants.
[EX A]: What do we know about Knight's first invention?

[EX Q]: 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
[EX A]: What is the function of the " proteinase inhibitors " in tomato plants ?

[EX Q]: Article: Events in New Jersey (From April 11th-23rd) Bloomfield Public Library, 90 Broad Street.(973)566-6200. "Catch Me if You Can", starring Leonardo DiCaprio.Monday, April 11th "The Invention of Lying", comedy.Thursday, April 14th, 8 p.m. "Sideways", starring Paul Giamatti.April 18 "Phone Call From a Stranger", with Bette Davis.April 21 All are Free. Studio Montclair, 33 Plymouth Street.(973)744-1818. "Sustainability and the Artistic Vision", group show featuring artists who use sustainable materials. Through April 23. Mondays through Saturdays, 9 a.m.to 5 p.m., or by appointment. The Community Theater, 100 South Street.(973)539-8008. Russian National Ballet Theatre presents "Chopiniana" and "Romeo and Juliet". April 15, at 8 p.m. $27 to $57. Essex County Environmental Center, 621 Eagle Rock Avenue.(973)228-8776. "New Jersey Wood-turners", adults learn to create art from pieces of wood found in nature. April 18 at 7 p.m. $8; members, free. Monmouth Museum, 765 Newman Springs Road.(732)747-2266. "Give Peace a Chance: John Lennon and Yoko Ono's Bed-in for Peace Exhibition", featuring more than 40 large-format images by the photojournalist Gerry Deiter. Through April 22. $7; children under 2, free. Tuesdays through Fridays, 10 a.m.to 4:30 p.m. William Paterson University, 300 Pompton Road.(877)978-3923. "The African Impact on the American Experience: Between Race and Culture", panel discussion moderated by Prof.Lawrence Mbogoni. Tuesday, April 12 at 12:30 p.m. American Labor Museum, 83 Norwood Street.(973)595-7953. "The Line That Divides: _ Trade Corridor", exhibition of photographs, paintings and video by Pamela Calore. Through April 23. Wednesdays through Saturdays, 1 to 4 p.m., or by appointment. $3 to $5; members and children under 12, free.
Answer: (973)566-6200
[EX A]:
Which of the following number can offer you more information if you show interest in John Lennon and his wife?