TASK DEFINITION: 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. 
PROBLEM:  "process paragraph : : Water vapor gets into the atmosphere through a process called evaporation. This then turns the water that is at the top of oceans, rivers and lakes into water vapor in the atmosphere using energy from the sun. The water vapor rises in the atmosphere and there it cools down. Water vapor rises in the atmosphere and there it cools down and forms tiny water droplets through something called condensation. These then turn into clouds. When they all combine together, they grow bigger and are too heavy to stay up there in the air. This is when they will fall to the ground as rain, or maybe snow or hail by gravity. ", "event : This then turns the water that is at the top of oceans, rivers and lakes into water vapor in the atmosphere using energy from the sun.", "entity : water" 

SOLUTION:  not exist 

PROBLEM:  "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" 

SOLUTION:  known location 

PROBLEM:  "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" 

SOLUTION:
 not exist