( ( Carbon dioxide ) ( ( is ( composed ( of ( ( ( ( two atoms ) ( of oxygen ) ) and ) ( ( one atom ) ( of carbon ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Carbon) (NN dioxide)) (VP (VBZ is) (VP (VBN composed) (PP (IN of) (NP (NP (NP (CD two) (NNS atoms)) (PP (IN of) (NP (NN oxygen)))) (CC and) (NP (NP (CD one) (NN atom)) (PP (IN of) (NP (NN carbon)))))))) (. .)))
Carbon dioxide is composed of two atoms of oxygen and one atom of carbon.
(ROOT (S (NP (NNP Carbon) (NN dioxide) (NNS molecules)) (VP (VBP consist) (PP (IN of) (NP (NP (DT a) (JJ central) (NN carbon) (NN atom)) (VP (VBN bonded) (PP (TO to) (NP (CD two) (NN oxygen) (NNS atoms))))))) (. .)))