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 : : 300 millions years ago plants and trees died. The plant and tree remains sank to the bottom of steamy, swampy areas. Layer upon layer of remains accumulated. Eventually forming a soggy, dense material called peat. The peat was buried over millions of years by sand, clay, and other mineral material. Pressure caused by the wait of the materials squeezed water from the peat. With the heat caused by increased burial peat slowly became coal. ", "event : The plant and tree remains sank to the bottom of steamy, swampy areas.", "entity : plants; trees" 

Output:  not exist 


Input: Consider Input:  "process paragraph : : Snow falls in an area for a very long time. The snow builds up for a very long time. The snow starts to become packed very firmly. The snow becomes something that's more like ice. Air pockets in the mass continue to grow smaller. The mass becomes solid and heavy enough to be called a glacier. The glacier moves because of gravity. ", "event : The snow builds up for a very long time.", "entity : glacier" 

Output:  not exist 


Input: Consider Input:  "process paragraph : : Fans blow air onto the evaporator's coils. The refrigerant within the coils absorbs the heat. The refrigerant changes from a liquid to a gas. The compressor compresses the gas, increasing the pressure. The hot, pressurized gas moves to the condenser. The gas condenses in the condenser and becomes a liquid again. Heat is radiated away from the condenser. The cooled liquid is returned to the evaporator. ", "event : The refrigerant within the coils absorbs the heat.", "entity : Air" 


Output:  known location