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: Trash is put into a household trashbag. The trashbags are thrown into a large outdoor trashcan. The trashcan is emptied by a large trash truck. The trash truck travels to the landfill. Unloads all the trash the truck has collected. 

Output: trash ,trash truck ,trashbags 


Input: Consider Input: You find an empty ice cube tray. You fill the tray with warm water. You carefully place the tray on an even surface in a freezer that is at least 32 degree Farhenheit, the freezing point of water. The water begins to get colder until it starts to freeze solid. The water expands as it freezes, one of the few liquids that has greater volume as a solid. Because you used warm water, the gasses in the water had evaporated out, so you will have nice clear ice cubes without cracks from the trapped gasses. 

Output: warm water ,ice cubes 


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