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.

Let me give you an example: 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.
The answer to this example can be: How many books are there in the British Library?
Here is why: In the Article, 10,000,000 is mentioned for the number of books available in the British Library, so this is a good question.

OK. solve this:
Article: The history of the computer keyboard started way back in 1714, when the first typewriters were manufactured. Then, they looked more like sewing machines, since they were designed by Remington, which also used to manufacture sewing machines. They were not used for commercial purposes but to produce legal documents that were neat. 1868 was the year when Christoper Latham Scholes created the typewriter that is common today and was later mass marketed in 1877. Before the typewriter advanced to become the modern-day keyboard, there were a few developments that led to it. First there was the combination of the typewriter with the telegraph to create a teletype. Key punches were also created by the combination of the typewriter with punch card systems. The teletype was used to input data in the very first computers, and this is where the development of the computer keyboard started. How the teletype worked with the computer is that a card was inserted into the teletype. The keys would then be pressed in the teletype and a series of holes would be punched in the card. These were known as key punches, which would then be put into a card reader which analyzed the cards as data. This was in 1946, and in 1948 an electromagnetically controlled teletype was brought into operation for the binary automatic computer . There later came the video display terminal and electronic keyboards. When people typed, they would immediately see the results on the screen. This was in the 1970s, and people accepted the technology because it was user-friendly. There was no long process involved in getting something typed. The very first designs of these keyboards were big and heavy, and most did not come with the computer. This was later modified to a smaller size and different colours and designs, and that is the keyboard we use today.
Answer: To produce legal documents.
Answer:
For what purpose were the first typewriters manufactured?