( ( ( 1992 ( Direct Use ) ) ( of ( ( the ( Sun 's ) ) Energy ) ) ) . )
(ROOT (NP (NP (CD 1992) (JJ Direct) (NN Use)) (PP (IN of) (NP (NP (DT the) (NNP Sun) (POS 's)) (NN Energy))) (. .)))
1992 Direct Use of the Sun's Energy.
(ROOT (S (NP (NP (JJS Most)) (PP (IN of) (NP (NP (DT the) (NN energy)) (VP (VBN used) (PP (IN by) (NP (VBG living) (NNS things))))))) (VP (VBZ comes) (ADVP (CC either) (RB directly) (CC or) (RB indirectly)) (PP (IN from) (NP (DT the) (NN sun)))) (. .)))
Most of the energy used by living things comes either directly or indirectly from the sun.