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 Q]:  Severe oesophageal candidiasis and croup due to involvement of the larynx developed insidiously in a girl aged 20 months .
[EX A]: oesophageal

[EX Q]:  Evaluation of various heart rate correction factors for the QT interval versus the R - R interval .
[EX A]: heart

[EX Q]:  Tumor markers such as alpha - fetoprotein , human growth hormone , carcinoembryonic antigen , and placental alkaline phosphatase were negative .
[EX A]:
placental