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:  The endotracheal tube also enhances bacterial entry to the lung by serving as a reservoir for bacteria to remain sequestered , safe from host defenses .
Example Output: lung

Example Input:  Although the sibling pairs received similar treatment , comparison at 7 years of age showed that the younger siblings had significantly better chest roentgenogram scores , total clinical scores , residual lung volumes , and ratios of residual volume to total lung volume .
Example Output: lung

Example Input:  Liver histology demonstrated sinusoidal congestion centering on the central vein , growing worse with progression from normal in control , to sterile , to septic .
Example Output:
Liver