given the input question and context, ouput answer spans. For example:
 question: What are the serum biomarkers that have been proposed in Neuromyelitis Optica Spectrum Disorders (NMOSD) to monitor disease activity?
 context: As our understanding regarding the immune pathophysiology of NMOSD expands, emerging biomarkers, including serum neurofilament light chain and glial fibrillary acidic protein (GFAP), may facilitate earlier relapse detection and inform long-term treatment decisions.
 answer span: serum neurofilament light chain, glial fibrillary acidic protein (GFAP)
question:What mammal has the lowest known chromosome number?
 context:Here we used the unique cytological attributes of female Indian muntjac, the mammal with the lowest known chromosome number (2n = 6)
 answer span: