( But ( ( solar energy ) ( ( ( is not ) ( ( the ( only kind ) ) ( of ( energy ( available ( on ( the earth ) ) ) ) ) ) ) . ) ) )
(ROOT (S (CC But) (NP (JJ solar) (NN energy)) (VP (VBZ is) (RB not) (NP (NP (DT the) (JJ only) (NN kind)) (PP (IN of) (NP (NP (NN energy)) (ADJP (JJ available) (PP (IN on) (NP (DT the) (NN earth)))))))) (. .)))
But solar energy is not the only kind of energy available on the earth.
(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))))) (. .)))