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:  The beta - catenin - - TCF - 1 pathway ensures CD4 ( + ) CD8 ( + ) thymocyte survival .
Example Output: TCF - 1

Example Input:  In addition a comparative analysis of the hemopoietic stem cell and precursor compartment resulting from the two Ikaros mutations reveals a profound yet not absolute requirement for Ikaros in the production and differentiation of these populations .
Example Output: Ikaros mutations

Example Input:  Activation of nuclear factor kappa B inflammatory bowel disease [ see comments ]
Example Output:
nuclear factor