In this task, you will be given sentences in which your task is to recognize the name of the organ of the body. An organ is a collection of tissues that structurally form a functional unit specialized to perform a particular function. Although there might be several correct answers, you need to write one of them.

Ex Input:
 Our growing understanding of the role that unfavorable patterns of gene expression play in the etiology of neurodegenerative disease emphasizes the need for strategies to selectively block the biosynthesis of harmful proteins in the brain .

Ex Output:
brain


Ex Input:
 Of 2564 persons screened , 53 had melanoma or nonmelanoma skin cancer ( 2 . 1 % ) .

Ex Output:
skin


Ex Input:
 Nine of 10 cases of primary GB malignancy were found to have high velocity arterial blood flow signals in the tumor masses .

Ex Output:
GB