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 Input:
Context: Konstantinos Raktivan (Greek: ; 1865 -- 21 May 1935) was a Greek jurist and politician, who served as cabinet minister, as the de facto first Governor-General of Macedonia, president of the Athens Bar Association and of the Council of State, Speaker of the Hellenic Parliament and member and president of the Academy of Athens. 
 Question: Who led Konstantinos Raktivan?

Ex Output:
academy of athens


Ex Input:
Context: Mutations in the solute carrier family 9, subfamily A member 6 (SLC9A6) gene, encoding the endosomal Na+/H+ exchanger 6 (NHE6) are associated with Christianson syndrome, a syndromic form of X-linked intellectual disability characterized by microcephaly, severe global developmental delay, autistic behavior, early onset seizures and ataxia. In a 7-year-old boy with characteristic clinical and neuroimaging features of Christianson syndrome and epileptic encephalopathy with continuous spikes and waves during sleep, we identified a novel splice site mutation (IVS10-1G>A) in SLC9A6. These findings expand the clinical spectrum of the syndrome and indicate NHE6 dysfunction as a new cause of electrical status epilepticus during slow-wave sleep (ESES). 
 Question: Mutation of which gene is implicated in the Christianson syndrome?

Ex Output:
slc9a6


Ex Input:
Context: The Damned United is a 2009 British sports drama film directed by Tom Hooper and adapted by Peter Morgan from David Peace's bestselling novel The Damned Utd, a largely fictional book based on the author's interpretation of Brian Clough's ill-fated tenure as football manager of Leeds United in 1974. 
 Question: Who id the director for The Damned United?

Ex Output:

tom hooper