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. 

Example Input:  "process paragraph : : The saliva breaks down the chemicals in the food a bit, which helps make the food mushy and easy to swallow. Your tongue helps out, pushing the food around while you chew with your teeth. The esophagus moves food from the back of your throat to your stomach. Strong muscles in the walls of the stomach and gastric juices break down food in your stomach. Your stomach moves the food into the intestines to complete digestion. ", "event : Your tongue helps out, pushing the food around while you chew with your teeth.", "entity : chemicals" 
Example Output:  known location 

Example Input:  "process paragraph : : Cells obtain glucose and oxygen. The glucose and oxygen create carbon dioxide. The cells release energy. The cells don't have enough oxygen to repeat this. The cells obtain more oxygen from the air. The cells repeat this process. ", "event : The glucose and oxygen create carbon dioxide.", "entity : glucose and oxygen" 
Example Output:  not exist 

Example Input:  "process paragraph : : You pack up your car with food, tents, sleeping bags, etc. Drive to your camping spot. Put up your tent. Hide your food from bears. Make a campfire. Roast marshmellows. Go to sleep in the tent. Wake up and enjoy nature. ", "event : Drive to your camping spot.", "entity : food" 
Example Output:
 known location