( ( f -RRB- ) ( ( Define ( ( the layers ) ( of ( ( ( ( ( ( ( the earth ) , ) ( crust mantle ) ) , ) ( inner core ) ) , ) ( outer core ) ) ) ) ) . ) )
(ROOT (S (LST (LS f) (-RRB- -RRB-)) (VP (VB Define) (NP (NP (DT the) (NNS layers)) (PP (IN of) (NP (NP (DT the) (NN earth)) (, ,) (NP (NN crust) (NN mantle)) (, ,) (NP (JJ inner) (NN core)) (, ,) (NP (JJ outer) (NN core)))))) (. .)))
f) Define the layers of the earth, crust mantle, inner core, outer core.
(ROOT (S (NP (NP (DT The) (JJ outer) (NN core)) (PP (IN of) (NP (DT the) (NN earth)))) (VP (VBZ is) (ADJP (JJ molten))) (. .)))