In this task, you are given a paragraph, event and an entity. The event is part of the given paragraph and it changes the state of the entity. Your task is to classify the state of the entity into three classes: 1) not exist, 2) unknown location and 3) known location. "not exist" means the entity doesn't exist in that state anymore. "unknown location" means the entity exists in that state but location is unknown. "known location" means the entity exists and location is known. 

[EX Q]:  "process paragraph : : You breathe air in. Air enters bronchial tubes. Air is then split into the bronchioles of each lung. Bronchioles have alveoli which are tiny air sacs. Alveoli is surrounded by many small blood vessels. Oxygen passes through alveoli into blood vessels. Blood leaves the lungs as it travels through the body. Blood carries carbon dioxide back to the lungs. Carbon dioxide released when you exhale. ", "event : Air enters bronchial tubes.", "entity : air" 
[EX A]:  known location 

[EX Q]:  "process paragraph : : Air is pulled into the lungs. Oxygen moves from the lungs into the bloodstream. Air is pushed through the vocal chords. A person talks. Other air is pushed out of the lungs into the environment. ", "event : Oxygen moves from the lungs into the bloodstream.", "entity : lungs" 
[EX A]:  unknown location 

[EX Q]:  "process paragraph : : You inhale air through your nose and mouth. The air travels down into your lungs. Oxygen from the air goes into your bloodstream. Oxygen circulates throughout the body due to the heart's pumping. Carbon dioxide travels from the blood into the lungs. Carbon dioxide travels from the lungs up the windpipe. Carbon dioxide is exhaled. ", "event : The air travels down into your lungs.", "entity : air" 
[EX A]:
 known location 

