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.

Example Input: It originated from the days of naval sailing squadrons and can trace its origins to the Royal Navy. Each naval squadron would be assigned an admiral as its head, who would command from the centre vessel and direct the activities of the squadron. The admiral would in turn be assisted by a vice admiral, who commanded the lead ships which would bear the brunt of a naval battle. In the rear of the naval squadron, a third admiral would command the remaining ships and, as this section of the squadron was considered to be in the least danger, the admiral in command of the rear would typically be the most junior of the squadron admirals. This has survived into the modern age, with the rank of rear admiral the most-junior of the admiralty ranks of many navies.
Example Output: where did the term rear admiral come from

Example Input: It rises in the Blue Ridge Mountains in western McDowell County, North Carolina, approximately 20 miles (30 km) east of Asheville. It flows ENE, forming, along with the Linville River, Lake James. It then passes north of Morganton, then southeast through Lake Hickory just north of Hickory, NC, and into the Lake Norman reservoir. From Lake Norman it flows south, passing west of Charlotte, then flowing through the Mountain Island Lake and Lake Wylie reservoirs, where it forms approximately 10 miles (15 km) of the border between North Carolina and South Carolina, also the confluence of the South Fork Catawba River and Catawba River is submerged by Lake Wylie near the NC / SC state line. It flows into northern South Carolina, passing Rock Hill, then through Fishing Creek Reservoir near Great Falls, and then into the Lake Wateree reservoir, approximately 30 miles (50 km) northeast of Columbia. At the now-submerged confluence with Wateree Creek, it becomes the Wateree River.
Example Output: where does the catawba river start and end

Example Input: Djokovic started the year by playing the Hopman Cup with fellow Serbian world No. 3 Jelena Janković. While he won all his round-robin matches, the team lost 1 -- 2 in the final to the second-seeded American team of Serena Williams and Mardy Fish. At the Australian Open, Djokovic reached his second consecutive Grand Slam final without dropping a set, including a victory over two-time defending champion Federer in the semi-finals. By reaching the semi-finals, Djokovic became the youngest player to have reached the semi-finals in all four Grand Slam events. In the final, Djokovic defeated unseeded Frenchman Jo-Wilfried Tsonga in four sets to earn his first Grand Slam singles title. This marked the first time since the 2005 Australian Open that a Grand Slam singles title was not won by Federer or Nadal.
Example Output:
when did djokovic win his first grand slam