Photovoltaic cells convert sunlight photons to electrons: Motors convert electrical energy (electricity) to mechanical energy:  Generators convert mechanical energy to electric energy.
(Generators; convert; mechanical energy; to electric energy) Context(Generators convert,List([128, 146))):(Motors; convert; electrical energy; to mechanical energy) Context(Motors convert Generators convert,List([58, 146))):(Photovoltaic cells; convert; sunlight photons; to electrons)
Generators convert,List([128, 146)) Motors convert Generators convert,List([58, 146))
Generators Motors Photovoltaic cells
convert convert convert
mechanical energy to electric energy
electrical energy to mechanical energy
sunlight photons to electrons