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. 
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Question:  "process paragraph : : Air is drawn in through the mouth. The air goes down the esophagus. The air moves into the lungs. The carbon dioxide is removed. The remaining oxygen enters the body. The remaining carbon dioxide is expelled through the mouth. ", "event : The air goes down the esophagus.", "entity : air" 

Answer:  known location 


Question:  "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" 

Answer:  unknown location 


Question:  "process paragraph : : The primary root breaks from the seed. A shoot develops with a leaf. The shoot breaks through the soil as a seedling. The tree becomes a sapling when it gets taller than 3 ft. The mature tree produces flowers or fruit. Seeds are produced from the flowers or fruit. A dead or dying tree is known as a snag. ", "event : A shoot develops with a leaf.", "entity : primary root" 

Answer:
 unknown location