TASK DEFINITION: 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.
PROBLEM: Put water in an ice cube tray. Put the ice cube tray in the freezer. Wait 5 to 6 hours. Take the ice cube tray out of the freezer. Bend the tray slightly to get the ice cubes out and into a drink.

SOLUTION: water ,ice cube tray ,ice cubes

PROBLEM: Magma cools inside the crust. Magma crystalizes. Lava cools on the surface. Lava crystalizes. Minerals dissolved in water crystlize.

SOLUTION: magma ,lava ,minerals

PROBLEM: The oil is extracted either onshore or offshore by large oil rigs. Crude oil is transported to a refinery. The refinery turns the crude oil into gasoline. The gasoline is loaded onto tank trucks. The tank trucks go to gas stations all over the place. The gasoline is delivered to the gas station.

SOLUTION:
oil ,gasoline