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: 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. 

A: recyclable materials ; the materials ,bales ,bales 
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Q: An owl leaves his nest. The owl flys out into the night. The owl looks down at the ground. The owls keen eyesight allows him to see in the dark. The owls sensitive hearing allows him to locate hidden prey. The owl swoops down. The owl catches a mouse in his talons. 

A: owl ,mouse 
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Q: Energy builds up in the crust of the earth. The energy causes the fault lines give way. The earth's plates move. The energy radiates outward from the fault in all directions. The seismic waves shake the earth as they move through it. 

A:
energy ,fault lines ,earth's plates ,seismic wave 
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