2066
Release from the gland of the reproductive hormones luteinising hormone and follicle - stimulating hormone is regulated primarily by hypothalamically - derived gonadotrophin - releasing hormone ( GnRH ) , although other releasing factors ( RF ) have been postulated to exist .
 Chemical: gonadotrophin - releasing hormone; Chemical: GnRH
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: gonadotrophin - releasing hormone; Chemical: GnRH