You will be given a definition of a task first, then some input of the task.
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. 

 "process paragraph : : Magma is formed when rock melts inside the Earth's crust. Magma rises. Collects inside magma chambers underneath a volcano. Pressure builds in the magma chambers as they fill. Gain energy for eruption. Some of the energy is converted into seismic activity (earthquakes). If the magma building in the volcano is thick and sticky it will trap gases. Results in an explosive eruption when the pressure becomes too intense. If the magma is thin and runs. The magma results in a low-pressure, slow-moving flow of magma instead of a violent eruption. ", "event : Magma rises.", "entity : volcano" 
Output:
 unknown location 