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.

Example Input: Context: Ana-Neda (Bulgarian and Serbian Cyrillic: -; fl. 1323-1324) was the Empress consort of Bulgaria briefly in 1323 - 1324 as the spouse of ''Despot of Vidin'' Michael Shishman who was elected as Emperor of Bulgaria in 1323. 
 Question: What was Ana-Neda's child's name?
Example Output: shishman

Example Input: Context: Fluorescence in situ hybridization (FISH) technique has been successfully used to detect the BCR-ABL gene fusion in chronic myeloid leukemia (CML) with the classic form of the Philadelphia chromosome (Ph). We applied FISH to study three CML patients showing variant Ph chromosome (either complex or simple type). The results demonstrate that the use of a yeast artificial chromosome (YAC)-derived probe (D107F9) and a cosmid probe (cos-abl 8), specific for BCR and ABL genes respectively, allows also the detection of the BCR-ABL fusion in CML patients with variant Ph. 
 Question: Which gene fusion is the result of the "philadelphia translocation" or the "philadelphia chromosome" mutation?
Example Output: the bcr/abl gene fusion

Example Input: Context: We show that overexpression of Polo-like kinase 4 (Plk4) in human cells induces centrosome amplification through the simultaneous generation of multiple procentrioles adjoining each parental centriole. This provided an opportunity for dissecting centriole assembly and characterizing assembly intermediates. Critical components were identified and ordered into an assembly pathway through siRNA and localized through immunoelectron microscopy. Plk4, hSas-6, CPAP, Cep135, gamma-tubulin, and CP110 were required at different stages of procentriole formation and in association with different centriolar structures. Remarkably, hSas-6 associated only transiently with nascent procentrioles, whereas Cep135 and CPAP formed a core structure within the proximal lumen of both parental and nascent centrioles. Finally, CP110 was recruited early and then associated with the growing distal tips, indicating that centrioles elongate through insertion of alpha-/beta-tubulin underneath a CP110 cap. Collectively, these data afford a comprehensive view of the assembly pathway underlying centriole biogenesis in human cells. 
 Question: Where in the cell do we find the protein Cep135?
Example Output:
centrosome