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.

[Q]:  Epstein - Barr virus ( EBV ) infection in nonsmall cell lung carcinoma ( NSCLC ) has been demonstrated in some ethnic groups .
[A]: lung


[Q]:  In this report we assess the systolic maximal flow velocity in carotid and intracranial arteries in 191 subjects with no history of cerebral vascular disease in 3 age groups : 20 - 40 years ( 1 group ) , 41 - 60 years ( 2 group ) , and above 60 years ( 3 group ) .
[A]: cerebral


[Q]:  Term placentas were obtained after elective cesarean section from healthy mothers near term with uncomplicated pregnancies .
[A]:
placentas