In this task, you will be shown a passage. You need to write a fill-in-the-gap question based on your understanding of the events that might be inferred from the passage. Your question should be answerable based on the passage and only have one correct answer. Show the gap in your question with a _ .

Example Input: It may look like a run-of-the mill paddock, but beneath the surface lies a breath-taking phenomenon. Situated 450 km southeast of Adelaide is Mount Gambier, one of the few places in the world with the water conditions and soft limestone bedrock that give rise to spectacular underground sinkholes. Stunning images show specialist divers exploring otherworldly sites such as the 65 metre deep Kilsby’s Sinkhole and the 120 metre deep Shaft, which lie below seemingly mundane farms and paddocks. The caverns are the epicentre of The Cave Divers Association of Australia, who navigate the sites in the name of science. ‘Most people are drawn to the sport for the challenge and exploration, but they become passionate about the scientific elements afterwards,’ said John Vanderleest, the national director of the Cave Divers Association of Australia.Mount Gambier is one of the few cities in the world with the right conditions for underground sinkholesIt features spectacular sites like Kilsby’s Sinkhole and the The Shaft, which are found below paddocksThe caverns are among 30 identified cave sites used by the The Cave Divers Association of AustraliaCave diving involves rigorous training to explore elusive caves using specified gear and equiptment
Example Output: _ use scuba gear and harnesses to traverse the caverns and unearth marine life and geographic discoveries.

Example Input: Why do their cheap meatballs taste so good? Why are bookshelves named Billy? Why can't store layouts be normal? These questions, and more, will no doubt be posed by the visitors who head to the new IKEA Museum opening next year. Of course, we might need to hammer together our own answers, having wound our way through thousands of irrelevant facts first. But perhaps a DIY museum experience will be even more satisfying once completed. The furniture company that changed the affordability of design has filed to build a museum on the site of its first store in Sweden. Tentatively scheduled to open in fall 2015, the museum will take up 7,000 square meters on the site of the recently relocated IKEA store in Almhult, also the site of IKEA'S first store opened by founder Ingvar Kamprad in 1958.IKEA Museum will be on site of first store in Älmhult, SwedenThe 7,000-square-meter museum will also have a museum shop and food for visitorsMuseum expected to draw 200,000 visitors per year
Example Output: While the then-17-year-old _ had already registered IKEA as a business in 1943, selling products ranging from nylon stockings to cigarette lighters, the Almhult site was the first brick-and-mortar store as well as the company's first furniture showroom.

Example Input: Ambulances in the United States may now be equipped with life-saving sponges to prevent gunshot victims from bleeding out. The device was cleared last year for use on the battlefield, but now, the FDA has approved it for civilian use too. Sponges are injected into the wound to stop the bleeding, and can later be removed safely once the victim has arrived at the hospital. The device, called XStat Rapid Homeostasis System, was developed by RevMedx out of Wilsonville, Oregon. What looks like a large syringe is filled with small, tablet-like sponges that can expand once inside a wound. The cellulose sponges are coated with a homeostatic agent, according to MedGadget, and grow rapidly to fill the hole.The XStat looks like a large syringe, filled with rapidly expanding spongesFDA approved the device for battlefield use last year, and now for civiliansDevice has potential to absorb 300 millilitres of blood or other bodily fluid
Example Output:
The _ sponges have a radiopaque marker on them, which can be detected under an X-ray to ensure all sponges are cleared from the body.