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 : : An area is at a higher elevation than the surrounding area. Rain falls. Water is in the area of high elevation. The water creates a stream. The stream moves towards lower elevation. The stream continues along the same path for a long time. The soil and rocks erode where the stream touches them. The stream moves deeper into the soil. The stream is smaller than the eroded area. ", "event : Rain falls.", "entity : rain" 

Answer:  not exist 


Question:  "process paragraph : : A tree produces seeds. The seeds are dispersed by wind, animals, etc. The seeds reach the ground. Grow into new trees. These new trees produce seeds. The process repeats itself over and over. ", "event : The seeds are dispersed by wind, animals, etc.", "entity : Tree" 

Answer:  not exist 


Question:  "process paragraph : : Magma comes up to the surface of the earth. The magma cools. Particles inside the magma move closer together. Crystals are formed. The crystals contain minerals. ", "event : The magma cools.", "entity : magma" 

Answer:
 known location