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.

Ex Input:
 Retinoic acid ( RA ) inhibited 3H - thymidine incorporation in response to GM - CSF .

Ex Output:
GM - CSF


Ex Input:
 The discordant mutants may reflect interactions with a variable domain of a conserved component or unique interactions with specialized components of the basal transcription apparatus in different cells .

Ex Output:
variable domain


Ex Input:
 Binding of progestins to the glucocorticoid receptor .

Ex Output:

glucocorticoid receptor