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 : : 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 


question:
 "process paragraph : : A fuel goes into the generator. The generator converts mechanical energy into electrical energy. A magnet moves near a wire. A steady flow of electrons is C. Electricity flows through a wire. Electricity comes out of the generator. ", "event : The generator converts mechanical energy into electrical energy.", "entity : fuel" 
answer:
 not exist 


question:
 "process paragraph : : Thunderstorms form over the ocean. An area of low pressure causes rotation. Several thunderstorms come together around this area. The storm is fed by rising air from warm ocean water evaporating. When the wind speeds reach 74 mph the storm is considered a hurricane. ", "event : An area of low pressure causes rotation.", "entity : thunderstorms; storm" 
answer:

 known location