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:  Simultaneous exposure to PPAR - gamma ligands ( e . g . 15 - deoxy - Delta ( 12 , 14 ) - prostaglandin J ( 2 ) , troglitazone ) showed drastic inhibition of proliferation and significant decreases in cell viability .
Example Output: PPAR - gamma

Example Input:  This sequence - specific binding is probably mediated by a highly conserved sequence motif , ATTTGCAT , present in all three transcriptional elements .
Example Output: transcriptional elements

Example Input:  Stat6 is necessary and sufficient for IL - 4 ' s role in Th2 differentiation and cell expansion .
Example Output:
IL - 4