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]: Trash is placed into a garbage container in the house. The trash is moved to a centralized container for the house. Trash is picked up by a sanitation company. The trash is combined in a large truck with trash from all around the city. The truck goes to the landfill. The truck dumps the trash into the landfill. 
[A]: trash ,truck 


[Q]: Grass and small plants grow in an area. These plants die. The soil gains organic material. The soil becomes more fertile. Larger plants are able to be supported. Trees eventually grow. 
[A]: Grass ,Small plants ,organic material ,larger plants ,trees 


[Q]: The spider picks a suitable place. The spider produces sticky silk from its abdomen. The spider attaches it to objects where it wants to build the web. The spider strings this silk back and forth between objects. A web is created. 
[A]:
silk ,web