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.

[EX Q]: Context: On November 13, 1982, 15-year-old Scott Safran of Cherry Hill, New Jersey, set a world record of 41,336,440 points on the arcade game Asteroids, beating the 40,101,910 point score set by Leo Daniels of Carolina Beach on February 6, 1982. In 1998, to congratulate Safran on his accomplishment, the Twin Galaxies Intergalactic Scoreboard searched for him for four years until 2002, when it was discovered that he had died in an accident in 1989. In a ceremony in Philadelphia on April 27, 2002, Walter Day of Twin Galaxies presented an award to the surviving members of Safrans family, commemorating the Asteroid Champions achievement. On April 5, 2010, John McAllister broke Safrans record with a high score of 41,838,740 in a 58-hour Internet livestream. 
 Question: Who had the highest score second playing Asteroids, Safran, Daniels or Mc Allister?
[EX A]: safran

[EX Q]: 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?
[EX A]: harp

[EX Q]: Context: Nevertheless, the Marder II (and similar Marder III) provided a great increase in firepower over contemporary German tanks during 1942 and into 1943. 
 Question: Which was the official year for the approval of Marder II?
[EX A]:
1942