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:  Elements regulating cell - and stage - specific expression of the C . elegans MyoD family homolog hlh - 1 .
Example Output: hlh - 1

Example Input:  The aromatic hydrocarbon receptor ( AHR ) is a ligand - activated transcription factor that regulates the expression of several drug - metabolizing enzymes and has been implicated in immunosuppression , teratogenesis , cell - specific hyperplasia , and certain types of malignancies and toxicities .
Example Output: aromatic hydrocarbon receptor

Example Input:  In agreement with this model , elimination of the ADAM13 cytoplasmic domain increased developmental alterations attributable to ADAM13 proteolytic activity .
Example Output:
ADAM13 cytoplasmic domain