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: There are a lot of public libraries in Britain. These libraries have more than one hundred and fifteen million books, not including those libraries of public schools. Public libraries not only lend books, music records but also help children, patients in hospitals and others to get special play readings, film shows and so on. The first public libraries were founded in about the year 1850. Today's public libraries usually have a reading-room, a lending room and a reference room. The greatest and most famous library in Britain is that of the British Library in London. It was founded in 1973 and has over 10, 000, 000 books. It has nearly every magazine, newspaper and book published in Britain and other parts across the world.
Answer: 10,000,000 or less.
Example output: How many books are there in the British Library?
Example explanation: In the Article, 10,000,000 is mentioned for the number of books available in the British Library, so this is a good question.
Q: Article: People hold different views on what or how much homework should be. It is partly due to the fact that people can't seem to agree on the purpose of homework. Some teachers think that homework is necessary to reinforce what is learned in school. And so they ask their students to memorize what was discussed in class through homework. Some teachers think the point of homework is to cover material that the class didn't have time to get to, so their homework is to let students learn additional things. Other teachers like homework simply because they want students to form work habits and still others believe homework is necessary because it's the best way for parents to learn what their children do in school. However, many parents seem to have different ideas. Elisa Cohen, who has twins at Lafayette Elementary School, doesn't like the fact that third-grade students in DC elementary schools are asked to write about 25 book summaries a year. She said, "They do the same thing over and over without really getting into alternate ways of thinking about books, reading and writing." Some education reformers , such as Howard Gardner, a Harvard University professor well-known for his theory on multiple intelligence, think that Cohen is on the right track. But it's often hard to persuade overworked teachers to give much thought to homework tasks.
Answer: 4.
A:
How many opinions do the teachers have on "homework"?