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 : : 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" 
Example Output:  known location 

Example Input:  "process paragraph : : Comets fly around in outer space. A comet flies close to a planet. The comet enters the planet's atmosphere. The comet crashes into the planet. The energy of the impact creates a hole on the planet. ", "event : A comet flies close to a planet.", "entity : comet" 
Example Output:  known location 

Example Input:  "process paragraph : : Coal is mined out of the ground. Coal is pulverized into fine powder. The coal is mixed with hot air. The coal and hot air are blown into a boiler. The coal and hot air burn over a fire. Highly purified water is pumped through pipes in the boiler. The water turns into steam. The steam presses against turbines. The turbines spin. Electricity is produced. ", "event : Coal is pulverized into fine powder.", "entity : coal" 
Example Output:
 unknown location