In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.
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Question: Passage: After the Southwest became part of the U.S., explorers continued to look for good east–west routes along the 35th parallel. In 1853, a crew led by U.S. Army Lieutenant Amiel Whipple surveyed along a sandy wash in the northern part of the Petrified Forest. So impressed was Whipple by the petrified wood along the banks of the arroyo that he named it Lithodendron Creek (Stone Tree Creek). Geologist Jules Marcou, a member of the Whipple expedition, observed that the petrified trees were from the Triassic.A slightly later route along the parallel was a wagon road, built between 1857 and 1860, that involved experimental use of camels as transport. In the late 19th century, settlers and private stagecoach companies followed similar east–west routes. Homesteaders who stayed in the area developed cattle ranches on the grasslands, and cattle grazed in the Petrified Forest until the mid-20th century.Also close to the 35th parallel was the Atlantic and Pacific Railroad. Its opening in the early 1880s led to the founding of towns like Holbrook and Adamana. Visitors could stop at the Adamana train station, book a hotel room, and take a tour of what was then called the Chalcedony Forest. Over the years, the line changed hands, becoming the Atchison, Topeka and Santa Fe Railway, and then the BNSF. More than 60 BNSF trains, mostly carrying freight, pass through the park every day. U.S. Route 66, a former transcontinental auto highway developed in 1926 from part of the National Old Trails Road, ran parallel to the railroad tracks until it was decommissioned in 1985. The park has preserved within its boundaries a small grassy section of the road. Interstate 40, which crosses the park, replaced the older highway. 
Question: What is the name of the place that 60 BNSF trains pass through everyday?

Answer: Petrified Forest.


Question: Passage: Richie Donovan works as a professional thief for Groznyi, a wealthy businessman, to pay off his debt for being smuggled into the U.S. as a child. He pulls off an initially successful diamond heist, but it is botched when he is involved in two separate car accidents. He is given one last chance to pay off his debt by going to Russia to steal a priceless antique cross, locked in a safe in a Moscow penthouse apartment. Richie and his Russian accomplices, brothers Peter and Yuri, recover the cross; but their elevator becomes stuck on the uncompleted 13th floor. Believing the police have stopped the elevator, the thieves take their fellow passengers hostage to negotiate an escape. They agree to send one hostage down; but, when the elevator doors open on the ground floor, the hostage has mysteriously been beheaded. 
The remaining hostages quickly divide into two groups: a Christian group consisting of Sonya, Helena and Katerina, who are later joined by Yuri, and another group consisting of nerdy Dmitry, beautiful Anna, and incompetent security guard Boris.
In the confusion, the Christian group seizes firearms and takes control, shooting Peter. Katerina is sent to stand guard over Richie and the remainder of the hostages, while Sonya takes Yuri to a chamber where he is to sacrificed by a wild man in armor named Alex. Yuri escapes, but he is impaled by one of Alex's traps, complete with disco music and lighting. In his rage, Alex kills Katerina, allowing Richie and the hostages to escape. They discover Alex's lair, where he has been watching everyone using security cameras. A photo reveals that Alex is the twin brother of Sonya, and they both believe themselves to be descendants of Ivan the Terrible. The group splits when Richie and Anna decide to chase after Alex, while Boris and Dmitry prefer to rig the room with various traps they have constructed and wait for Alex to come to them. 
Question: Who are the people who think the authorities are responsible for the elevator stopping, leading them to take hostages?

Answer: Richie.


Question: Passage: In the beginning of the film, a brief overview of the history of the marathon is shown, with footage of dramatic races involving Dorando Pietri, Abebe Bikila and Rod Dixon.  Notable marathoners such as Frank Shorter, Dick Beardsley, Alberto Salazar, Grete Waitz, Paula Radcliffe, Joan Benoit-Samuelson, and Kathrine Switzer provide commentary about the sport.
The focus is then on the six featured runners and their training for the 2005 Chicago Marathon. American Deena Kastor and Kenyan Daniel Njenga are both elite runners, and are  determined to win the race.  Kastor was the bronze medalist at the 2004 Olympic Marathon, but has yet to win a marathon.  Njenga had finished second multiple times in previous Chicago Marathons.  Kastor is shown training and recovering from an injury in Mammoth Lakes, California, while Njenga's life as a sponsored runner in Tokyo is profiled.
The rest of the runners featured live in Chicago. Ryan Bradley and Lori O'Connor are both married young professionals; Bradley is a veteran marathoner who hopes to earn a qualifying time for the Boston Marathon, and O'Connor is running her first marathon.  She finds it humorous when colleagues ask if she expects to win.  Jerry Meyers is a jovial 70-year-old who claims to run marathons for the T-shirt.  Leah Caille is a new runner that took up the sport to help recover from an emotional divorce.
While preparing for the race, Bradley suffers a knee injury and is unable to compete. He is clearly upset by this, and takes out his frustration by going for a long bike ride. O'Connor and Caille go through the new experience of the long training sessions necessary for a marathoner.  Meyers lends his veteran knowledge while leading slower training runs with his daughter, who is running her first marathon. 
Question: What stops the first time marathon runner's husband from running?

Answer:
a knee injury.