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.

[Q]: Context: Christianson syndrome (CS) is an X-linked neurodevelopmental and neurological disorder characterized in males by core symptoms that include non-verbal status, intellectual disability, epilepsy, truncal ataxia, postnatal microcephaly and hyperkinesis. CS is caused by mutations in the SLC9A6 gene, which encodes a multipass transmembrane sodium (potassium)-hydrogen exchanger 6 (NHE6) protein, functional in early recycling endosomes. The extent and variability of the CS phenotype in female heterozygotes, who presumably express the wild-type and mutant SLC9A6 alleles mosaically as a result of X-chromosome inactivation (XCI), have not yet been systematically characterized. Slc9a6 knockout mice (Slc9a6 KO) were generated by insertion of the bacterial lacZ/-galactosidase (-Gal) reporter into exon 6 of the X-linked gene. Mutant Slc9a6 KO male mice have been shown to develop late endosomal/lysosomal dysfunction associated with glycolipid accumulation in selected neuronal populations and patterned degeneration of Purkinje cells (PCs). In heterozygous female Slc9a6 KO mice, -Gal serves as a transcriptional/XCI reporter and thus facilitates testing of effects of mosaic expression of the mutant allele on penetrance of the abnormal phenotype. Using -Gal, we demonstrated mosaic expression of the mutant Slc9a6 allele and mosaically distributed lysosomal glycolipid accumulation and PC pathology in the brains of heterozygous Slc9a6 KO female mice. At the behavioral level, we showed that heterozygous female mice suffer from visuospatial memory and motor coordination deficits similar to but less severe than those observed in X-chromosome hemizygous mutant males. Our studies in heterozygous Slc9a6 KO female mice provide important clues for understanding the likely phenotypic range of Christianson syndrome among females heterozygous for SLC9A6 mutations and might improve diagnostic practice and genetic counseling by helping to characterize this presumably underappreciated patient/carrier group. 
 Question: Mutation of which gene is implicated in the Christianson syndrome?
[A]: slc9a6


[Q]: Context: As a result of continued decline in the traditional Gaelic heartlands, today no Civil parishes in Scotland in Scotland has a proportion of Gaelic speakers greater than 65% (the highest value is in Barvas, Isle of Lewis, with 64.1%). In addition, no civil parish on mainland Scotland has a proportion of Gaelic speakers greater than 20% (the highest value is in Ardnamurchan, Highland (council area), with 19.3%). Out of a total of 871 civil parishes in Scotland, the proportion of Gaelic speakers exceeds 50% in 7 parishes, exceeds 25% in 14 parishes, and exceeds 10% in 35 parishes. Decline in traditional areas has recently been balanced by growth in the Scottish Lowlands. Between the 2001 and 2011 censuses, the number of Gaelic speakers rose in nineteen of the countrys 32 council areas. The largest absolute gains were in Aberdeenshire (council area) (+526), North Lanarkshire (+305), City of Aberdeen (+216), and East Ayrshire (+208). The largest relative gains were in Aberdeenshire (+0.19%), East Ayrshire (+0.18%), Moray (+0.16%), and Orkney Islands (+0.13%). 
 Question: Which area has a greater percentage of people that speak Gaelic, Barvas or Ardnamurchan?
[A]: barvas


[Q]: Context: Baghdad, in 2004, three soldiers of an Army bomb-disposal unit are investigating a report of an improvised explosive device (IED). They use a sophisticated robot drone to examine the device, which consists of several undetonated artillery shells wired together and hidden under plastic/fabric sheets. The unit, led by Sgt. Thompson, decides that they can detonate the IED using plastic explosives that they'll activate from a safe distance. Thompson also says that the explosion won't cause very much property damage and should result in no loss of life.A small cart is affixed to the back of the robot, which is then sent back into the blast zone. Before it can reach the IED, the trailer loses a wheel. Thompson dresses in a bulky bomb suit and walks down to the trailer. He picks it up and carries it to the IED, rigging it properly. As he walks back, his partners, Sgt. Sanborn and Specialist Eldridge, scan the immediate area for anyone they consider suspicious or who may be in the blast zone. When Thompson is about 25 meters from the bomb, but still in the kill zone, Eldridge notices a man running a butcher shop who is using a cellular phone. Eldridge yells to Sanborn and the specialist begins to run toward the man, ordering him to drop his phone. Sanborn tells Eldridge to shoot the man, who presses a sequence of numbers on the phone. The bomb detonates with Thompson still in the kill zone. The overpressure from the bomb kills Thompson despite the bomb suit; a large splash of blood hits the inside of the clear visor on his helmet.Thompson's body is packed into a coffin for shipment home, Sanborn supervises the procedure. He looks over Thompson's possessions for a few moments before the coffin is sealed. Back at the base, Eldridge is sitting in the rec room when the base psychologist, Lt. Col. Cambridge walks in and asks Eldridge how he's feeling (in the wake of Thompson's death). Eldridge is still clearly upset over the incident; he dry fires his rifle several times, suggesting that if he'd shot the man with the cell phone, Thompson might still be alive.A new leader for the team, Sgt. William James, arrives at the base. Sanborn meets him at his housing unit, where James is taking the plywood covers off his windows. When Sanborn suggests that James keep them on because of mortar shrapnel, James tells him that they won't be any good anyway if a mortar shell crashes in through the unit's roof.The next day the team responds to a report of another IED on a narrow street in the city. After the initial investigation, where they link up with the Army platoon that reported the bomb, James is dressed up in a suit similar to the one Thompson wore previously. As James approaches the bomb site, he tosses a smoke grenade, which agitates Sanborn, who can't see James to instruct him further. James also is uncommunicative with his team members, another factor that Sanborn does not appreciate. James finds an artillery shell buried under a small pile of trash. He disarms it easily, and then notices a secondary wire leading away from it. He uncovers the cable and finds it connects to a junction of six more cables. When James pulls on the junction connector, six more shells are uncovered. Another cable leads to a nearby building. James disarms the six new shells; as he does, he notices a man quickly leaving the building, presumably the bomber. James flashes one of the small detonators from one of the shells and smiles at the man, who vanishes from sight. Back at their Humvee, Sanborn tells James that he needs to communicate more during operations and not treat his duty as if it's a solo act. James brushes his teammate off. James does the same later when he and Sanborn talk while grooming themselves for another day's work in the latrine.The team is again called out for another bomb threat. This time, the bomb is in a car parked in front of a United Nations building. When the building is evacuated, James dons 
 Question: Where was Staff Sergeant Matthew Thompson killed?
[A]:
baghdad