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:  Our data indicate that the various subunits of the human P - TEFb complex may play distinct roles at multiple stages to mediate Tat activation of HIV - 1 transcription elongation .
Example Output: P - TEFb

Example Input:  Using gel retardation analysis , four binding sites for Rap1p have been identified within the promoter of the RAP1 gene .
Example Output: RAP1 gene

Example Input:  P53 mutations also offer new approaches to the study of the origins of mutations in human cancer .
Example Output:
P53 mutations