( ( OIL Oil ) ( ( is ( ( ( the ( ( most important ) form ) ) ( of energy ) ) ( we ( ( use , ) ( ( making up ) ( ( ( about 38 ) percent ) ( of ( the ( world ( energy supply ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP OIL) (NNP Oil)) (VP (VBZ is) (NP (NP (DT the) (ADJP (RBS most) (JJ important)) (NN form)) (PP (IN of) (NP (NN energy))) (SBAR (S (NP (PRP we)) (VP (VBP use) (, ,) (S (VP (VBG making) (PRT (RP up)) (NP (NP (QP (RB about) (CD 38)) (NN percent)) (PP (IN of) (NP (DT the) (NN world) (NN energy) (NN supply))))))))))) (. .)))
OIL Oil is the most important form of energy we use, making up about 38 percent of the world energy supply.
(ROOT (S (NP (NNP Oil)) (VP (VBZ is) (NP (NP (DT the) (ADJP (RBS most) (RB commonly) (VBN used)) (NN source)) (PP (IN of) (NP (NP (NN energy)) (PP (IN in) (NP (DT the) (NN world))))))) (. .)))