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.

A reservoir is formed. The collects water converting the water's from kinectic to potential. The water is forced through a turbine under the reservoir. The turbine spins and so does the generator connected to it. The water's energy is turned into electrical energy. The transformer converts electrical energy from the generator to a high voltage. The national grid uses high voltages to transmit electricity through the power lines.
reservoir ,water ,turbine ,generator ,water's energy ,electrical energy ,high voltage ; electricity