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:
 Heart sound and electrocardiogram recording devices for telemedicine environments .

Ex Output:
Heart


Ex Input:
 The Met - enkephalin versus Leu - enkephalin concentration ratio was around five in each area of the brain assayed .

Ex Output:
brain


Ex Input:
 Image - directed and color Doppler studies of gallbladder tumors .

Ex Output:

gallbladder