You will be given a definition of a task first, then some input of the task.
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.

MBCs were only slightly higher than MICs for the three S . faecium variants obtained from our patient , and they did not appear to be tolerant strains of S . faecium .
Output:
S . faecium