You will be given a definition of a task first, then some input of the task.
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.

 " Basal values " , obtained without the influence of subarachnoid blood , were lower than expected in " uninjured " brain , and this fact , although unexplained , should be kept in mind in future investigation in this field .
Output:
brain