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.

[Q]: "process paragraph : : Human beings burn fossil fuels (oil, gas, etc.). Carbon dioxide from the burning fossil fuels enter the atmosphere. The make-up of the atmosphere changes. Some energy from the sun cannot escape back through the changed atmosphere. The earth begins to heat because of the extra trapped energy. Human beings cut down trees. Human beings do not re-plant the trees. Trees cannot help take the extra carbon dioxide from the atmosphere. The extra trapped energy starts to change the earth's short term weather. Eventually the long-term climate patterns start to change. ", "event : Carbon dioxide from the burning fossil fuels enter the atmosphere.", "entity : fossil fuels"
[A]: not exist

[Q]: "process paragraph : : An adult fish lays eggs. The eggs incubate for a few weeks or months before hatching. The young fish remain where they hatched until they are big enough to venture into the open water. The fish continue to grow. The fish reach adulthood. Reproduce continuing the cycle. ", "event : The eggs incubate for a few weeks or months before hatching.", "entity : eggs"
[A]: not exist

[Q]: "process paragraph : : You inhale air through your nose and mouth. The air travels down into your lungs. Oxygen from the air goes into your bloodstream. Oxygen circulates throughout the body due to the heart's pumping. Carbon dioxide travels from the blood into the lungs. Carbon dioxide travels from the lungs up the windpipe. Carbon dioxide is exhaled. ", "event : The air travels down into your lungs.", "entity : air"
[A]:
known location