TASK DEFINITION: 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.
PROBLEM: Tectonic plates smash together. The edges of the plates crumple up. The ridges are mountain ranges. Magma is forced to the surface. Magma forms a volcano.

SOLUTION: magma ,tectonic plates ,volcano

PROBLEM: 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.

SOLUTION: recyclable materials ; the materials ,bales ,bales

PROBLEM: You receive a vaccination through an injection or a nasal spray. The vaccine contains a weakened version of the virus or bacteria responsible for the disease. The body's immune system reacts to the virus or bacteria. The immune system creates antibodies to fight the virus or bacteria. The antibodies remain in the body. The antibodies are ready to fight the disease if the person is infected with the disease.

SOLUTION:
virus or bacteria ,antibodies