In this task, you are given a paragraph, and your job is to generate comma-separated entities present in the given paragraph. Generate entities from a given passage in such a way that (i) they are present in the paragraph, (ii) they are non-duplicate, (iii) they underwent a state change during the process. Avoid creating entities that (i) aren't present in the process paragraph and (ii) aren't significant. 

Q: Fans blow air onto the evaporator's coils. The refrigerant within the coils absorbs the heat. The refrigerant changes from a liquid to a gas. The compressor compresses the gas, increasing the pressure. The hot, pressurized gas moves to the condenser. The gas condenses in the condenser and becomes a liquid again. Heat is radiated away from the condenser. The cooled liquid is returned to the evaporator. 

A: Air ,Heat ,Refrigerent Liquid ,Refrigerent Gas ,Liquid 
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Q: A red giant burns mass. This mass creates high core temperatures. The mass decreases. The red giant can no longer fuse the carbon and oxygen in its center. The gravity of the star can no longer hold the outside layers. The layers break away. Only the inner core remains. This inner core is known as a white dwarf. 

A: red giant ,white dwarf 
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Q: Two large veins bring blood to the heart. The blood enters the right atrium. The blood flows through the tricuspid valve. The blood travels into the right ventricle. The blood goes through the pulmonary arteries to the lungs. Blood picks up oxygen in the lungs. Oxygenated blood enters the left atrium. Blood goes to the left ventricle. Blood leaves the heart via the aorta to the rest of the body. The deoxygenated blood returns to the heart. 

A:
oxygenated blood ,deoxygenated blood ,oxygen 
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