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. 

[EX Q]:  "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" 
[EX A]:  not exist 

[EX Q]:  "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" 
[EX A]:  unknown location 

[EX Q]:  "process paragraph : : The saliva breaks down the chemicals in the food a bit, which helps make the food mushy and easy to swallow. Your tongue helps out, pushing the food around while you chew with your teeth. The esophagus moves food from the back of your throat to your stomach. Strong muscles in the walls of the stomach and gastric juices break down food in your stomach. Your stomach moves the food into the intestines to complete digestion. ", "event : Your tongue helps out, pushing the food around while you chew with your teeth.", "entity : chemicals" 
[EX A]:
 known location