( Sunlight ( ( is ( composed ( of ( ( ( photons , ) or ) ( particles ( of ( solar energy ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Sunlight)) (VP (VBZ is) (VP (VBN composed) (PP (IN of) (NP (NP (NNS photons)) (, ,) (CC or) (NP (NP (NNS particles)) (PP (IN of) (NP (JJ solar) (NN energy)))))))) (. .)))
Sunlight is composed of photons, or particles of solar energy.
(ROOT (S (NP (NP (DT The) (NN energy)) (PP (IN in) (NP (NN sunlight)))) (VP (VBZ is) (ADVP (RB also)) (VP (VBN known) (PP (IN as) (NP (JJ solar) (NN energy))))) (. .)))