Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

A house of cards? Sounds unbelievable, doesn't it? Not if the architect is 31-year-old Bryan Berg. He's made a career out of building fantastic card houses, stadiums, capitols, castles -- and the world's tallest card tower. How does he do it? Bryan's structures are amazing because they are made entirely of perfectly balanced, freestanding playing cards. He never uses glue, tape, or anything else to hold the cards together. Nor does he fold the cards. He's discovered another way to make a strong house of cards, using a trick from nature. To make plants strong, nature builds them with cells that have tough walls. Rows and rows of these cells form a grid that helps leaves and stems keep their shape. Bees use the same kind of repeating pattern to create strong honeycombs, where they live and store honey. Bryan designs similar grids, using cards to create a repeating pattern of cells. He begins with a single cell made by balancing four cards against one another to form a box. Then he repeats the cell over and over, expanding outward to form the grid, which makes a good foundation for a strong card structure. The larger the grid, the more weight it can carry. Sometimes Bryan uses several cards, instead of just one, to construct the cell walls, making the grid even stronger. The trick, he tells kids when he speaks in classrooms, is to place your cards as tightly together as possible when laying out your grid, making sure the cards are not leaning at all. After building this solid base, Bryan lays cards across the top to make the floor for the next "story" of the building. He may add towers, columns, steeples, or domes. Using the principle of repeating cells, Bryan builds structures of amazing strength. In the Cards Not surprisingly, Bryan has always been interested in building things. Growing up on a "big, old farm" in rural Iowa, he had plenty of room to play. "We were in the middle of nowhere," Bryan remembers, "with lots of space to do whatever we wanted. I was always making something, using things like sticks or bales of hay." Bryan's grandfather taught him how to stack cards. Bryan's two interests -- building and card stacking -- soon combined. But stacking in his family's farmhouse was challenging. "Our old house had wood floors that weren't all level," he reports. "And they weren't very firm. When people walked around, it was like 'earthquake action.' It was a challenge to build something that wouldn't fall down immediately." Bryan constructed tower after tower; he went through a lot of trial and error before he built anything taller than himself. When he placed a few decks of cards on top of his grid, he discovered how strong it was. Bryan's towers began to grow taller. How Tall Is Too Tall? Bryan's first Guinness World Record for the world's tallest card tower came in the spring of 1992, when he was in high school. Learning that the world record was 12 feet 10 inches, Bryan built a slim tower that topped out at 14 feet 6 inches. Done as a project for his geometry class, it took him 40 hours and 208 decks of cards. Since then he's gone on to win world records for even taller buildings. His latest winner measured 25 feet 3.5 inches and used about 2,400 decks of cards. _ Why don't these towers fall down? The key is in a good solid base, a repeating pattern of stories, and a tapering top. Bryan likes to point out how card buildings resemble real ones. They are built cell by cell, story by story. The separate parts make one strong whole. The heavier the building, the stronger and more stable it is. But the weight can't all be at the top. After spending so much time building something so cool, Bryan admits it's sometimes painful to see his structures destroyed. But he compares his work to the building of a sandcastle or an ice sculpture.
What was Bryan's first world record?

This was a 12-week randomized, placebo-controlled trial to assess the efficacy of quetiapine monotherapy in the treatment of posttraumatic stress disorder (PTSD). Eighty patients were randomly assigned to treatment with either quetiapine or placebo. The primary outcome measure was the Clinician-Administered PTSD Scale (CAPS). Secondary efficacy measures included the CAPS subscales, the Davidson Trauma Scale, the Positive and Negative Syndrome Scale (PANSS), the Clinical Global Impressions (CGI) scales for severity of Illness and improvement, the Hamilton Depression Rating Scale (HAM-D), and the Hamilton Anxiety Rating Scale (HAM-A). Safety measurements included adverse events, vital signs, the Abnormal Involuntary Movement Scale, the Barnes Akathisia Scale, the Simpson-Angus Scale, and the Arizona Sexual Experiences Scale. After a 1-week placebo run-in, quetiapine was started at a daily dosage of 25 mg and increased to a maximum of 800 mg; the average was 258 mg (range, 50-800 mg). Reductions in CAPS total, re-experiencing, and hyperarousal scores were significantly greater for the quetiapine group than for the placebo group. Greater improvements were also observed for quetiapine in scores on the Davidson Trauma Scale, CGI severity and improvement ratings, PANSS positive symptom and general psychopathology subscales, HAM-A, and HAM-D than for placebo. Adverse events were generally mild and expected based on prior studies of quetiapine in this and other patient population. There were no differences in safety measures between groups. Quetiapine monotherapy was efficacious in the treatment of PTSD. These findings suggest quetiapine as a single agent is effective in treating military PTSD.
Symptoms of which disorder are evaluated with the Davidson Trauma Scale?

In Amsterdam, American backpackers Paxton (Jay Hernandez) and Josh (Derek Richardson) and Icelander Oli (Eyor Gujonsson) meet Alexei (Lubomir Bukovy), a Russian man who tells them about a Slovak hostel filled with American-loving local women. The backpackers board a train to Slovakia, where they meet a Dutch businessman (Jan Vlasak) long enough to be unnerved by his bizarre behavior. Upon arriving in the small village, the backpackers check into the local hostel and find themselves sharing a room with Natalya (Barbara Nedeljakova) and Svetlana (Jana Kadeabkova), two attractive, single women who entice the backpackers to a spa and a disco before sleeping with them.Tthe next morning, Oli is missing. A young Japanese backpacker named Kana (Jennifer Lim) also reports that her friend Yuki (Keiko Seiko) has disappeared. An MMS photo sent from Yuki's phone shows Yuki and Oli beneath a smokestack of an abandoned factory, with the word Sayonara written beneath it. Unbeknownst to Josh and Paxton, Oli has been decapitated and Yuki tortured, and (presumably) killed. Paxton and Josh decide to leave Bratislava with Kana the following day. They spot a man wearing Oli's jacket at a museum of medieval torture relics. Paxton later notices that in the MMS photo of Oli, Yuki and the smokestack is faked. Later that night, while partying with Natalya and Svetlana, Paxton and Josh succumb to the effects of alcohol. Josh stumbles back to the hostel while Paxton passes out in the disco's storage room.Hours later, Josh wakes up handcuffed to a chair in a dungeon-like room surrounded by power tools and weapons. The Dutch businessman enters in a leather apron and gloves and begins torturing Josh, drilling him in his pecs just above his nipples. After he is done, the Dutch Business man sits down and talks to Josh, explaining his unfulfilled dreams of being a surgeon. Josh begs to be released, the businessman then cuts Josh's Achilles' tendon and lets him crawl towards the door before finally murdering him.Across town, Paxton awakens and returns to the hostel to find both Josh and Kana missing. In his room are a different pair of beautiful women inviting him to a spa, eerily similar to Natalya's and Svetlana's offer from before. When the local police chief (Miroslav Taborsky) proves unhelpful, Paxton locates Natalya and Svetlana and demands to be taken to an "art show" where he thinks his friends are. They drive to a factory on the outskirts of the town where inside, Paxton sees the Dutch businessman cutting up Josh's dead body. He screams at Natalya, who laughs at him, and he is then ambushed by thugs who drag him past cells filled with other backpackers being tortured by various clients.Paxton is taken to his own cell and restrained to a chair, joined minutes later by a German client (Petr Jani) who tortures him. Distracted by Paxton's ability to plead for his life in German, the client puts a ball-gag in his mouth and tries to kill him with a chainsaw, but before he can begin Paxton starts throwing up, either out of fear or because the gag was choking him. Due to his ball-gag, he starts to choke on his own vomit, and the client quickly removes the ball-gag, probably to stop Paxton dying before he could kill him. He then continues his torture with the chainsaw, but inadvertently saws off Paxton's handcuffs along with his ring and pinky finger before slipping on the ball-gag which he just threw on the floor. The client drops the chainsaw on his own leg and severs it.Paxton breaks free and shoots the client in the head with a gun on the weapon counter. When the guard comes to check on the situation, Paxton shoots and kills him before escaping dressed in torture gear. He hides in a nearby room to avoid capture from other guards, where he finds a collection of victims. He hides under a pile of body parts before being taken to a room where he sees dead bodies being chopped up by a butcher for cremation. Paxton kills the butcher with a hammer,

Who kills Natalya, Svetlana, and Alexei?