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.

Input: Consider Input: Context: Miguel Angel Garcia Tebar (born 26 September 1979), known as Miguel Garcia, is a Spanish retired footballer who played as a defensive midfielder. 
 Question: What role does Miguel Angel Garcia Tebar play in football?

Output: midfielder


Input: Consider Input: Context: Telomeres may regulate human disease by at least two independent mechanisms. First, replicative senescence occurs once short telomeres generate DNA-damage signals that produce a barrier to tumor progression. Second, telomere position effects (TPE) could change gene expression at intermediate telomere lengths in cultured human cells. Here we report that telomere length may contribute to the pathogenesis of facioscapulohumeral muscular dystrophy (FSHD). FSHD is a late-onset disease genetically residing only 25-60 kilobases from the end of chromosome 4q. We used a floxable telomerase to generate isogenic clones with different telomere lengths from affected patients and their unaffected siblings. DUX4, the primary candidate for FSHD pathogenesis, is upregulated over ten-fold in FSHD myoblasts and myotubes with short telomeres, and its expression is inversely proportional to telomere length. FSHD may be the first known human disease in which TPE contributes to age-related phenotype. 
 Question: Which disease is associated with the ectopic expression of the protein encoded by the gene DUX4?

Output: fshd


Input: Consider Input: Context: Nestin is an intermediate filament protein expressed in neuroepithelial stem cells during development and it is later replaced by cell specific neuronal or glial filaments. Nevertheless, nestin cells remain within adult tissues and they can be regarded as potential neural stem cell (NSC). Nestin cells have been detected in Schwann cells related with sensory corpuscles of rodent and they have been demonstrated to be NSC. We have investigated the existence of nestin in human cutaneous cells Meissner and Pacinian corpuscles through the use of immunohistochemistry techniques and in situ hybridization. S100 protein (also regarded as a marker for NSC) and vimentin (the intermediate filament of mature Schwann cells in sensory corpuscles) were also investigated. The results show that the adult human cutaneous sensory Meissner and Pacinian corpuscles contains a small population of Schwann-related cells (vimentin) which on the basis of their basic immunohistochemical characteristics (S100 protein, nestin) can be potential NSCs. Cells sharing identical immunohistochemical profile were also found in the close vicinity of Meissner corpuscles. Because their localization they are easily accessible and may represent a peripheral niche of NSC to be used for therapeutic goals. 
 Question: Which intermediate filament (IF) protein can be used as a non-specific marker of the neuronal precursor cells of the subventricular zone?


Output: nestin