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:  Despite their high degree of sequence similarity , all five RFC genes are essential for cell proliferation in S . cerevisiae .
Example Output: RFC genes

Example Input:  Dual signal peptides mediate the signal recognition particle / Sec - independent insertion of a thylakoid membrane polyprotein , PsbY .
Example Output: signal recognition particle

Example Input:  TNF - alpha effect was eliminated by a 2 - bp substitution mutation in the NF - kappa B1 binding half site of the NF - kappa B cis element .
Example Output:
TNF - alpha