Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Example Input: Context: Police officers Brian Taylor (Jake Gyllenhall) and Mike Zavala (Michael Pena) are close friends and partners in the Los Angeles Police Department. Taylor is filming their police activities for a film project, attaching small cameras to his and Zavala's uniforms and carrying around a camcorder, much to the dismay of their peers and superiors. After shooting two suspects following a high speed chase, the shooting is declared justified by the D.A. and the officers are commended for their actions. Taylor and Zavala's antics are met with scorn by fellow officer Van Hauser (David Harbour).The officers respond to a call regarding a man, Mr. Tre (Cle Shaheed Sloan) scaring off a mailman while intoxicated. Upon arrival, Tre hurls racist insults at the Hispanic Zavala, who responds by accepting a fight, to Taylor's approval. Zavala beats him soundly and arrests him, but wins the man's respect for both fighting fair and not mentioning the fight in the report (which may have sent Tre to prison for life due to Three Strikes). Later that night, Tre and his friends are shot at by a group of Latino gang members and one of his friends is killed. The officers find the now-burnt vehicle used in the drive-by the next day, but are shooed off the scene by homicide detectives as well as Van Hauser, who warns them they will get screwed over by the LAPD someday.Responding to a missing persons report, the officers discover two children bound and locked away in a closet and arrest the distressed mother and her drug-addict husband.The cops arrive as a group at a loud outdoor party, the Hispanics from the drive by shooting are celebrating. The cops and partiers verbally joust and Brian sizes up the gang leader, Big Evil (Maurice Compte). The cops depart telling them to keep the noise down.Taylor begins dating Janet (Anna Kendrick) and feels Janet is the only girl he's dated who can connect with him on an intellectual level. Zavala, who is married and expecting a child, offers him relationship advice.Investigating the South Central area, Taylor has a hunch and determines to scope out the home of the mother of a known gang member and sees an expensive pick up truck in the driveway. A woman walks out of the house and delivers a large soup saucepan with lid to the man in the truck. As the truck drives away, the officers follow and then pull over the man in the truck, ostensibly for having CD hanging off the mirror and illegally obstructing the front view, which is minor traffic violation in California per VC 26708 . As Zavala approaches the driver's window to make contact, the driver suddenly draws a gun and fires, and Zavala deflects the man's arm just in time to avoid being shot. After arresting the driver, the officers find an ornately-decorated, compact .45 Colt automatic pistol, a gold-plated AK-47 rifle, and a large amount of money in his truck (hidden in the soup pot). As revealed later, the money and firearms are connected to a Mexican drug cartel operation in the South Central area as well as the gang that did the drive-by on Tre and others.Days later, the two officers are first responders at a house fire that has trapped children on the second floor. Zavala and Taylor enter the house and rescue two young children and are nearly overcome by heat and smoke. When the mother informs them that a third child remains inside, Zavala to rushes to the aid of the remaining child as Taylor reluctantly follows, barely making it out alive. The two are commended and receive the Medal of Valor for their actions, but Taylor has mixed emotions about the situation. Using the house fire incident as leverage, Taylor convinces Zavala to further investigate the South Central incident, to Zavala's chagrin. Arriving at the house, Taylor and Zavala notice suspicious behavior from outside and enter. They arrest another man, who is also in possession of several ornate firearms: a .45 Colt automatic similar to the first one found at the traffic stop, and a Walther PPK. Investigating further, Taylor discovers a hidden stash of Mexican and Asian 
 Question: Whose body shielded Taylor's?
Example Output: zavala's

Example Input: Context: Schimke immuno-osseous dysplasia (OMIM 242900) is an uncommon autosomal-recessive multisystem disease caused by mutations in SMARCAL1 (swi/snf-related, matrix-associated, actin-dependent regulator of chromatin, subfamily a-like 1), a gene encoding a putative chromatin remodeling protein. Neurologic manifestations identified to date relate to enhanced atherosclerosis and cerebrovascular disease. Based on a clinical survey, we determined that half of Schimke immuno-osseous dysplasia patients have a small head circumference, and 15% have social, language, motor, or cognitive abnormalities. Postmortem examination of 2 Schimke immuno-osseous dysplasia patients showed low brain weights and subtle brain histologic abnormalities suggestive of perturbed neuron-glial migration such as heterotopia, irregular cortical thickness, incomplete gyral formation, and poor definition of cortical layers. We found that SMARCAL1 is highly expressed in the developing and adult mouse and human brain, including neural precursors and neuronal lineage cells. These observations suggest that SMARCAL1 deficiency may influence brain development and function in addition to its previously recognized effect on cerebral circulation. 
 Question: Mutations in which gene cause Schimke immune-osseous dysplasia?
Example Output: harp

Example Input: Context: Newspaper columnist John Klein (Richard Gere) and his wife Mary (Debra Messing) are involved in an accident when Mary swerves to avoid a black, flying figure. John survives the crash unscathed, but Mary is hospitalized. After Mary dies of an unrelated brain tumor, John discovers mysterious drawings of the creature that she had created prior to the night of the accident. Two years later, John becomes lost in West Virginia and inexplicably finds himself in Point Pleasant, hundreds of miles off his route. Driving in the middle of the night, his car breaks down; and he walks to a nearby house to get help. The owner, Gordon Smallwood (Will Patton), reacts violently to John's appearance and holds him at gunpoint. Local police officer Connie Mills (Laura Linney) defuses the situation while Gordon explains that this is the third consecutive night John has knocked on his door asking to use a phone, much to John's confusion. John stays at a local motel and considers how he ended up so far from his original destination. Officer Mills mentions to John that many strange things have been occurring in the past few weeks and that people report seeing a large winged creature like a giant moth with red eyes. She also tells John about a strange dream she had, in which the words "Wake up, Number 37" were spoken to her. While conversing with Gordon one day, it is revealed to John that he had heard voices from his sink telling him that, in Denver, "99 will die". While discussing the day's events at a local diner, John notices that the news is showing a story on an airplane crash in Denver that killed all 99 passengers aboard. The next night, Gordon frantically explains that he had met the voices in his head, a being named Indrid Cold Later that night, Gordon calls John and says that he is standing with a character named Indrid Cold. While John keeps Cold on the line, Officer Mills checks on Gordon. Cold answers John's questions, convincing him that he is a supernatural being. This episode starts a string of supernatural calls to John's motel room. One tells him that there will be a great tragedy on the Ohio River. Later, John receives a call from Gordon and rushes to his home to check on him. He finds Gordon outside, dead from exposure. John becomes obsessed with the being, dubbed Mothman. He meets an expert on the subject, Alexander Leek (Alan Bates), who explains its nature and discourages John from becoming further involved. However, when John learns the governor (Murphy Dunne) plans to tour a chemical plant located on the Ohio River the following day, he becomes convinced the tragedy will occur there. Officer Mills and the governor ignore his warnings, and nothing happens during the tour. Soon afterwards, John receives a mysterious message that instructs him to await a call from his deceased wife Mary back in Georgetown, and he returns home. On Christmas Eve, Officer Mills calls and convinces him to ignore the phone call from "Mary", return to Point Pleasant, and join her. Though anguished, John agrees. As John reaches the Silver Bridge, a malfunctioning traffic light causes traffic congestion. As John walks onto the bridge to investigate, the bolts and supports of the bridge strain. The bridge comes apart, and John realizes that the prophesied tragedy on the Ohio River was about the bridge. As the bridge collapses, Officer Mills's car falls into the water. John jumps in after her and pulls her from the river and up to safety. As the two sit on the back of an ambulance, they see that 36 people have been killed, making Connie the "number 37" from her dream. The epilogue displays a series of graphics that state the cause of the bridge collapse was never fully determined. It also states that, although the Mothman has been sighted in other parts of the world, it was never seen again in Point Pleasant. 
 Question: What is the name of the moth man expert?
Example Output:
alexander leek