( ( ( ( Light energy ) ( -LRB- ( phototrophs -RRB- ) ) ) 2 ) . )
(ROOT (NP (NP (NP (JJ Light) (NN energy)) (PRN (-LRB- -LRB-) (NP (NNS phototrophs)) (-RRB- -RRB-))) (ADJP (CD 2)) (. .)))
Light energy (phototrophs) 2.
(ROOT (S (NP (NNS Phototrophs)) (VP (VP (VB capture) (NP (JJ light) (NN energy))) (CC and) (VP (VB convert) (NP (PRP it)) (PP (TO to) (NP (NP (NN chemical) (NN energy)) (PP (IN inside) (NP (PRP$ their) (NN cell))))))) (. .)))