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. 

[EX Q]: People separate different materials to be recycled. The recyclable materials go to a recycling center. The recycling center further separates the materials. Large equipment compacts the materials into bales. The recyclable materials are shipped to other recycling centers. The other recycling centers further process the materials that center specializes in. The materials are purchased by manufacturers. The manufacturers process the recycled materials the same way they would use new materials. The recycled materials are incorporated into new products. 
[EX A]: recyclable materials ; the materials ,bales ,bales 

[EX Q]: Energy is created by burning either diesel or petrol in a combustion chamber. The energy is transferred from the pistons moving up and down at high speeds. This piston motion is converted to a rotary motion through the crankshaft and axle. The axle turns the wheels. The car moves forward. 
[EX A]: diesel ,petrol ,energy ,pistons ,piston motion ,rotary motion ,car 

[EX Q]: Sugar enters the body. Bloodstream. The pancreas. Insulin lower sugar levels. Bloo sugar goes back to normal. 
[EX A]:
sugar 

