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. 

Input: Consider Input: Items are collected. The items are sorted. Trash is removed from everything else. Goes to a landfill. The items go into a baler machine for each kind of material. They come out as bales. The bales are shipped to manufacturers to use to make products. 

Output: items ,trash ,bales ,products 


Input: Consider Input: A male and female bird mate. The female lays eggs. The eggs are incubated by the parents, by sitting on them, for weeks. The bird hatches from an egg. The parents feed them as the continue to grow. Develop flight feathers. The parents teach them to fly. After learning to fly they leave the nest to live on their own. The next year they breed beginning the cycle again. 

Output: eggs ,bird ,flight feathers 


Input: Consider Input: Rock begins as magma from a volcano. The magma cools. Crystals form and the magma become igneous rocks. The igneous rocks break down into sediment. Become sedimentary rocks. If subjected to heat and/or pressure from plate-tectonic activity the sedimentary rocks become metamorphic rock. The metamorphic rocks melt. Become magma again. 


Output: magma ,crystals ,igneous rocks ,sediment ,sedimentary rocks ,metamorphic rocks ,rock