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. 

Input: Consider Input:  "process paragraph : : Blood sugar levels increase after a meal. Cells in the pancreas release insulin. Insulin causes the body to absorb glucose from the blood. Blood sugar goes back to normal. Blood sugar is too low. The amount of insulin goes down. Cells in the pancreas release glucagon. The liver turns stored glycogen into glucose. The liver releases the glucose into the blood. Blood sugar goes back to normal. ", "event : Cells in the pancreas release insulin.", "entity : insulin" 

Output:  known location 


Input: Consider Input:  "process paragraph : : Pollution enters natural water sources such as rivers and lakes. The pollution negatively affects the water quality. The pollution negatively affects the health of plants and animals. The plants and animals have shorter, less healthy lives. The plants and animals do not reproduce very well. The number of plants and animals decreases over time. The quality of water gets worse and worse as there are no plants or animals to clean it. Eventually there is nothing living in the water and it is unusable. ", "event : The pollution negatively affects the water quality.", "entity : pollution" 

Output:  known location 


Input: Consider Input:  "process paragraph : : People dig up coal from the ground. People burn coal for heat or electricity. Pollution from the coal goes into the sky. Coal pollution enters clouds. Clouds rain over an area. The polluted rain becomes acid rain. ", "event : People burn coal for heat or electricity.", "entity : coal" 


Output:  not exist