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.

Ex Input:
Green is a color that gathers sunlight easily. Sunlight is gathered by the leaves of the plant. The sunlight is broken down into glucose through photosynthesis. The glucose travels the plant. The plant uses that glucose as energy to grow.

Ex Output:
sunlight ,glucose ,energy

Ex Input:
You start with a glacier. Through warming or other methods a chunk is taken off the glacier. The chunk drifts into the sea. And it settles where it can remain in its state. It is considered an iceberg.

Ex Output:
Glacier ,Chunk ,iceberg

Ex Input:
First you dig a whole. You place a pumpkin seed in the hole. You put some dirt over the seed. You water the seed. The seed will sprout. A vine will grow. The vine will flower. Pumpkins will appear where the flowers were.

Ex Output:
pumpkin seed ,vine ,flower