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:  PCC 6803 mutant impaired in cytochrome c maturation .
Example Output: cytochrome c

Example Input:  The non - major histocompatibility complex ( MHC ) - encoded CD1 family has recently emerged as a new antigen - presenting system that is distinct from either MHC class I or class II molecules .
Example Output: CD1 family

Example Input:  Consistent with this , rh5 expression in R8 disappears when R7 cells are absent ( in sevenless mutant ) .
Example Output:
sevenless mutant