Definition: 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.
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 .
Output:
lung