Given the task definition and input, reply with output. 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 : : The magma comes out from a volcano. The magma cools and becomes a rock. Over time the rock picks up sediment which changes the type of rock. This creates a sedimentary rock. The heat from inside and outside can cook a rock. This heat forms a third kind of rock. The cycle continues around the three types of rocks. ", "event : The magma cools and becomes a rock.", "entity : magma" 

 not exist 