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.

Ex Input:
 However , in a variation of this assay in which the protease is omitted , the mutant enzymes exhibited substantial levels of prolyl isomerase activity ( 5 - 20 % of wild - type ) , revealing that these mutations confer sensitivity to protease digestion and that the classic in vitro assay for prolyl isomerase activity may be misleading .

Ex Output:
prolyl isomerase


Ex Input:
 Biochemical experiments and genome sequencing have shown that , despite the prokaryotic cell and genome organization , basal transcriptional elements of members of the domain Archaea ( i . e . , TATA box - like sequences , RNA polymerase , and transcription factors TBP , TFIIB , and TFIIS ) are of the eukaryotic type .

Ex Output:
RNA polymerase


Ex Input:
 The sections were stained with anti - polymorphonuclear leukocyte antibody , the endothelial marker factor VIII - related antigen , and with hematoxylin and eosin .

Ex Output:

factor VIII