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: Inhibition of Ebola Virus Infection: Identification of Niemann-Pick C1 as the Target by Optimization of a Chemical Probe.
Example Output: Niemann-Pick C1

Example Input: Extracellular loop II modulates GTP sensitivity of the prostaglandin EP3 receptor.
Example Output: EP3

Example Input: Synthesis of quinoline derivatives: discovery of a potent and selective phosphodiesterase 5 inhibitor for the treatment of Alzheimer's disease.
Example Output:
phosphodiesterase 5