( ( Carbon Dioxide ) ( ( is ( ( a ( ( naturally occurring ) ( chemical compound ) ) ) ( composed ( of ( ( two ( oxygen atoms ) ) ( covalently ( bonded ( to ( a ( single ( carbon atom ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Carbon) (NNP Dioxide)) (VP (VBZ is) (NP (NP (DT a) (ADJP (RB naturally) (VBG occurring)) (NN chemical) (NN compound)) (VP (VBN composed) (PP (IN of) (NP (NP (CD two) (NN oxygen) (NNS atoms)) (VP (ADVP (RB covalently)) (VBN bonded) (PP (TO to) (NP (DT a) (JJ single) (NN carbon) (NN atom))))))))) (. .)))
Carbon Dioxide is a naturally occurring chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom.
(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))))))) (. .)))