In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.

Ex Input:
Examples of this form of articulation are found in the hip, where the rounded head of the femur (ball) rests in the cup-like acetabulum (socket) of the pelvis, and in the glenohumeral joint of the shoulder, where the rounded head of the humerus (ball) rests in the cup-like glenoid fossa (socket) of the shoulder blade. The shoulder includes a sternoclavicular articulation joint.

Ex Output:
how did the ball and socket joint get its name

Ex Input:
In 1906 and 1907 Robert Baden-Powell, a lieutenant general in the British Army, wrote a book for boys about reconnaissance and scouting. Baden-Powell wrote Scouting for Boys (London, 1908), based on his earlier books about military scouting, with influence and support of Frederick Russell Burnham (Chief of Scouts in British Africa), Ernest Thompson Seton of the Woodcraft Indians, William Alexander Smith of the Boys' Brigade, and his publisher Pearson. In the summer of 1907 Baden-Powell held a camp on Brownsea Island in England to test ideas for his book. This camp and the publication of Scouting for Boys are generally regarded as the start of the Scout movement.

Ex Output:
boy scouts or girl scouts which came first

Ex Input:
The size of a matrix is defined by the number of rows and columns that it contains. A matrix with m rows and n columns is called an m n matrix or m-by-n matrix, while m and n are called its dimensions. For example, the matrix A above is a 3 2 matrix.

Ex Output:
how to write the dimensions of a matrix