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:  The strongly DNA binding p50 subunit showed only very weak , if any , induction of gene expression .
Example Output: p50 subunit

Example Input:  Using unidirectional PCR we isolated a 361 - bp 5 ' promoter region and delineated the intronic / exonic boundaries which include a non - coding exon 1 , a single intron , and a coding exon 2 , a structure that is typical of genes of the RNase A superfamily .
Example Output: RNase A superfamily

Example Input:  Engineering temperature - sensitive SH3 domains .
Example Output:
SH3 domains