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. 

Q:  "process paragraph : : An animal dies. The animal is buried fast under mud. The soft parts of the animal's body rot away. The mud around the skeleton turns into rock. The skeleton dissolves. A mold is left in the mud where the skeleton was. ", "event : The animal is buried fast under mud.", "entity : animal" 

A:  known location 
****
Q:  "process paragraph : : Water is introduced to carbon dioxide. The water becomes acidic. The water seeps down to a mineral based material. The acidity of the water carves and shapes the rock. And may form geological phenomenon. ", "event : The water becomes acidic.", "entity : water" 

A:  unknown location 
****
Q:  "process paragraph : : Two large veins bring blood to the heart. The blood enters the right atrium. The blood flows through the tricuspid valve. The blood travels into the right ventricle. The blood goes through the pulmonary arteries to the lungs. Blood picks up oxygen in the lungs. Oxygenated blood enters the left atrium. Blood goes to the left ventricle. Blood leaves the heart via the aorta to the rest of the body. The deoxygenated blood returns to the heart. ", "event : The blood enters the right atrium.", "entity : oxygenated blood" 

A:
 not exist 
****