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:
 ( B ) Real - time PCR was performed on total RNA samples from the human brain regions known to express MOR1 .

Ex Output:
brain


Ex Input:
 In vitro cytotoxic potential and mechanism of action of selected coumarins , using human renal cell lines .

Ex Output:
renal


Ex Input:
 Portal venous blood draining into the liver from the intra - abdominal abscess had increased levels of TNF - alpha , IL - 1beta , and IL - 6 in both sterile and septic groups compared with a control normal animal group .

Ex Output:

liver