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 Input:
"process paragraph : : Living things have carbon in them. Living things die. The remains of living things eventually become buried underground. More physical pressure is put on the remains of living things as they become further underground. This carbon-based mixture stays underground for a long time. Humans discover this carbon-based mixture. This carbon-based mixture is brought up to the earth's surface. The recently discovered fossil fuel is burned. Burning releases the energy that has been stored in the fossil fuel. The energy can be used to generate power. ", "event : Living things die.", "entity : living things ; remains of living things"

Ex Output:
unknown location

Ex Input:
"process paragraph : : A tadpole is hatched. The tadpole eventually grows hind legs. The tadpole loses its tail. The tadpole becomes a frog. The frog mates with another frog to produce more offspring. A tadpole is hatched. The cycle begins again. ", "event : The tadpole eventually grows hind legs.", "entity : tadpole"

Ex Output:
unknown location

Ex Input:
"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"

Ex Output:
unknown location