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:  Nineteen Zambian patients with the tropical splenomegaly syndrome and sinusoidal lymphocytosis on liver biopsy were studied .
Example Output: liver

Example Input:  Differences between pigs of the innervated and denervated groups were not apparent , with respect to blood flow to any other region ( caudate region , brain stem , cerebellum ) .
Example Output: brain

Example Input:  Two siblings presented with typical clinical features of congenital pulmonary alveolar proteinosis ( PAP ) .
Example Output:
pulmonary