instruction:
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. 
question:
 "process paragraph : : Chloroplasts in the leaf of the plant traps light from the sun. The roots absorb water and minerals from the soil. This combination of water and minerals flows from the stem into the leaf. Carbon dioxide enters the leaf. Light, water and minerals, and the carbon dioxide all mix together. This mixture forms sugar (glucose) which is what the plant eats. Oxygen goes out of the leaf through the stomata. ", "event : The roots absorb water and minerals from the soil.", "entity : carbon dioxide" 
answer:
 unknown location 


question:
 "process paragraph : : An animal lives a happy life. The animal gets very old. The animal dies. The animal's skeleton sinks to the bottom of an ocean. The skeleton is buried by mud. More sand and mud fall on the skeleton. Pressure increases on the skeleton from the weight of more mud. The sand and mud turn into rock. The skeleton dissolves in the water. A hole is preserved in rock that is the shape of the skeleton. ", "event : The animal gets very old.", "entity : animal" 
answer:
 unknown location 


question:
 "process paragraph : : A radioisotope has unstable nuclei that does not have enough binding energy to hold the nucleus together. Radioisotopes would like to be stable isotopes so they are constantly changing to try and stabilize. In the process, they will release energy and matter from their nucleus and often transform into a new element. This process, called transmutation, is the change of one element into another as a result of changes within the nucleus. He radioactive decay and transmutation process will continue until a new element is formed that has a stable nucleus and is not radioactive. ", "event : Radioisotopes would like to be stable isotopes so they are constantly changing to try and stabilize.", "entity : Radioisotopes" 
answer:

 unknown location