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.

[Q]: Article: English is a language spoken all around the world. There are more than 42 countries where the majority of the people speak English. Most native speakers of English are found in the United Kingdom, the United States, Canada, Australia, South Africa, Ireland and New Zealand. In total, for more than 375 million people, English is their mother tongue. An equal number of people learn English as a second language. These people will perhaps speak the language of their own country at home with their family, but the language of the government, schools, newspapers and TV is English. However, the number of people who learn English as a foreign language is more than 750 million. Everywhere in the world children go to school to learn English. In China, students learn English at school as a foreign language, except for those in hong Kong, where many people speak English as a first or a second language. In only fifty years, English has developed into the language most widely spoken and used in the world. English is the working language of most international organizations, international trade and tourism. English is also the language of global culture, such as popular music and the Internet. You can listen to English songs on the radio or use English to communicate with people around the world through the Internet. With so many people communicating in English every day, it will become more and more important to have a good knowledge of English.
Answer: 75,000,000.
[A]: How many people learn English as a second language?

[Q]: Article: International Robotics Forum Tokyo Big Sight,Tokyo, Japan, December 4-5 The Robotics Society of Japan (RSJ), to provide opportunities for young robot lovers to learn more about industrial and service robots, is going to hold the International Robotics Forum that will cooperate with this year's International Robot Exhibition. The lectures and explanations throughout the Conference will be given in Japanese but will be interpreted into English at the same time. The Conference will offer a great opportunity for senior high school students from all around the world to communicate with each other through robots. Therefore, we look forward to your active participation. The event will take place two days. On the morning of Day One, Prof. Shinichi Yuta of the Shibaura Institute of Technology will give a lecture on basic mobile robotics and learning through robots. This will be followed by a talk by Mr. Kazuhiko Yokoyama of Yasukawa Electric Corporation who will explain the mechanism and control of robots and also point out the highlights of the International Robot Exhibition. We will prepare a challenge for all the participants. We will send you themes for robot research. You will study them in advance, and on the afternoon of Day One, you will visit the Tokyo International Exhibition Center and investigate real robot. You will be able to experience fun and excitement of advanced robot technologies. On the morning of Day Two, you will present your study and investigation results. On the afternoon of Day Two, as the final event, awards will be given by the RSJ to groups that have given outstanding presentations. We hope that many future robot researchers and engineers will be born today.
Answer: Senior high school students worldwide.
[A]: Who is the Conference intended for?

[Q]: Article: IMAGINE if there was a device that could do everything for you - wake you up every morning, chat with you and type your e-mails. The piece of technology in question would be smart, able to tell you about the weather and where the nearest restaurants are. The good thing is you no longer need to wonder, because something like this already exists. And its name is Siri. Siri is a voice recognition application designed for Apple products and the concept has been around for almost a year. When Siri first came out it could only speak English, but now it has "learned" lots of new languages, including Chinese, Cantonese and Taiwanese, reported The Wall Street Journal. So, you can give it orders in your mother tongue. But how could a cell phone or a computer "hear" what you are saying and understand it? This is all because of voice recognition technology. When you speak, your voice creates vibrations in the air - a bit like waves in the water when you throw a rock into the lake. The microphone receives the vibrations and the computer changes them into digital data that is then divided into many parts. They are analyzed one by one to see what pronunciations each part stands for. The computer then puts these pronunciations together into possible words according to its built-in dictionary. But figuring out the words is far from enough; building words into meaningful sentences is the most difficult part. The computer has to compare what it hears to a large library of known phrases and sentences to determine what the user is saying. However, people don't always talk in the most standard way and sometimes make grammatical mistakes. This is why traditional voice recognition software always requires you to remember keywords and to speak in a certain way. Fortunately, Siri isn't like that. It's not just "voice recognition"; it's "natural language understanding (NLU)". You can ask it things like "Do I need an umbrella today?" and it will know that you are asking about the weather, according to ABC News. "The key thing is NLU - understanding what you mean and what you want," Neil Grant from Nuance, a software company in the US, told The Guardian. "Historically, you had to learn a huge long list of commands . As NLU progresses, you can say what you want in a way that's natural to you."
Answer: Figuring out meaningful sentences based on the words.
[A]:
Which step is the most complicated in the process of voice recognition according to the article?