In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

Example Input:  DNA - binding activity of nuclear factor - kappaB was determined by electrophoretic mobility shift assay .
Example Output: nuclear factor

Example Input:  This octanucleotide , in reverse orientation , is also found in all light chain variable region ( VL ) genes , and in the immunoglobulin heavy chain transcriptional enhancer .
Example Output: transcriptional enhancer

Example Input:  An attempt to correlate receptor levels with clinical responsiveness demonstrated that glucocorticoid receptor determination might be of value in patients with lymphoid malignancies but probably not in patients with other leukemias .
Example Output:
glucocorticoid receptor