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:  This study established a UUO model in angiotensin type 1a receptor ( AT1a ) deficient ( mutant ) mice to elucidate the role of angiotensin II through AT1a on the fibrosis of the obstructed kidney ( OBK ) .
Example Output: angiotensin II

Example Input:  Rel family proteins regulate the expression of genes linked to kappa B - binding motifs .
Example Output: Rel family proteins

Example Input:  Differential ultraviolet - B - induced immunomodulation in XPA , XPC , and CSB DNA repair - deficient mice .
Example Output:
- B

