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:
Adult mushrooms produce spores. Release them into the air by process of sporulation. Spores are carried by the wind. Land in a hospitable growing environment. The spores germinate into the soil. The mushroom starts growing. The adult mushroom produce spores of its own to repeat the process.

Ex Output:
Adult mushroom ,spores ,mushroom

Ex Input:
Water seeps into rocks. The water freezes and thaws. Cracks form in the rocks. Cracks also form when rocks heat up. The rocks slowly break down.

Ex Output:
water ,rocks ,cracks

Ex Input:
The organism must die to begin the process. The soft tissue decomposes. The bones are left behind. Scavengers tear the body apart and move the bones elsewhere. Wind and rain also scatter the bones further. The bones left behind will weather and become buried by sand and soil. The proteins in the bone are replaced with minerals that are dissolved in the soil. This creates a rock-like substance called a fossil. Water and wind erosion wear away the layers of soil on top of the fossil. This makes discovery of the fossil possible.

Ex Output:
organism ,soft tissue ,bones ,proteins ,soil ,minerals ,fossil