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: The Browns traveled to Indianapolis to take on an Andrew Luck-led Colts offense. The Colts were able to score in the first quarter as Andrew Luck ran for a 3-yard touchdown making the score 7-0 for the only score of the game. The Browns responded in the 2nd quarter coming within a point when Brandon Weeden found Greg Little on a 14-yard pass (with a failed PAT) making the score 7-6. Then, Luck ran for another touchdown this time from 5 yards out to make the score 14-6 at halftime. The Browns came within a point again in the 3rd quarter as Weeden found Josh Gordon on a 33-yard pass making the score 14-13 but the Colts wrapped things up with Adam Vinatieri's 38-yard field goal followed by a scoreless 4th quarter making the final score 17-13 as the Browns' road record at this point of the season was 0-4 while their record overall was 1-6.
Question: Who scored the longest touchdown of the game?

Ex Output:
josh gordon

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 proto-oncogene ras is an essential gene for the growth and the differentiation for various types of cells. Ras, ras gene product, is a GTP binding protein which controls the signal transduction by GTP hydrolysis. The ras gene is frequently activated by point mutations in various types of human cancers, which results in a decrease in the GTPase activity of its product. A GTPase-activating protein p120 (p120GAP) was identified as a factor which stimulates the GTPase of normal ras gene product p21 but not of the mutated. An NF1 gene was identified as a gene whose loss of function causes an onset of human disorder, neurofibromatosis type I. The NF1 gene encodes a protein which contains a region with a similarity to the catalytic domain of p120GAP. We recently purified a novel Ras GAP whose molecular weight and immunogenecity are different from those of p120GAP and NF1. We named the novel mammalian Ras GAP as Gap1m. Isolation and sequencing of Gap1m cDNA revealed that Gap1m is indeed a novel Ras GAP. We also succeeded in isolation of another novel Ras GAP gene, GapIII/Gap1IP4BP, which is closely related to Gap1m. Recently, it is shown that GapIII/Gap1IP4BP binds inositol-tetrakis phosphate compounds. The overview of these Ras GAP molecules is described.
Question: Which is the gene mutated in type 1 neurofibromatosis?

Ex Output:
nf1