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.

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

Example Input:  Over 90 % of the surviving patients had solitary , small and low - stage invasive tumors completely resected and 83 % survived without relapses in the bladder . [ 1 ]
Example Output: bladder

Example Input:  From the standpoint of the etiopathogenic mechanisms the angiocholitis was determined by biliary lithiasis in 59 cases , by sclerosis of the Oddi sphincter in 5 cases , by postoperative cicatriceal stenosis of the main biliary pathway in 2 cases , by hepatic hydatitosis in 16 cases , by Vater ampuloma in 10 cases by cancers of the main biliary pathway in 40 cases and by the congenital cyst of the choledocus in one case .
Example Output:
hepatic