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 blood sugar drops in a body. Cells in the pancrease release glucagon. The liver in response turns the glucagon into glucose. And releases it into the blood. The blood sugar levels are restored. ", "event : Cells in the pancrease release glucagon.", "entity : glucagon" 
Example Output:  known location 

Example Input:  "process paragraph : : A bird picks a spot high spot, often in a tree. The bird collects bits of sticks and grass. The sticks and grasses are placed between support branches. Leaves, mud and spider webs are added to the sticks. The mud, leaves and webs glue the sticks together. The solid nest supports the eggs. ", "event : The bird collects bits of sticks and grass.", "entity : sticks and grass" 
Example Output:  unknown location 

Example Input:  "process paragraph : : The farmer chooses a crop that will grow well in his region. The farmer tills the soil to loosen it. The farmer spreads seeds. The farmer tills again to plant the seeds. Crops grow. ", "event : The farmer tills the soil to loosen it.", "entity : seeds" 
Example Output:
 unknown location