( ( ( molecule -- ) ( ( ( ( ( ( ( ( ( ( two or ) more ) atoms ) ( bonded ( into ( a ( single particle ) ) ) ) ) , ) ( such ( as water ) ) ) , ) ( H2O ( -LRB- ( ( ( two ( hydrogen atoms ) ) ( bonded ( to ( one oxygen ) ) ) ) -RRB- ) ) ) ) or ) ( ( ( ( carbon dioxide ) , ) CO2 ) ( -LRB- ( ( ( one ( carbon ( atom bonded ) ) ) ( to ( two ( oxygen atoms ) ) ) ) -RRB- ) ) ) ) ) . )
(ROOT (NP (NP (NN molecule)) (: --) (NP (NP (NP (QP (CD two) (CC or) (JJR more)) (NNS atoms)) (VP (VBG bonded) (PP (IN into) (NP (DT a) (JJ single) (NN particle)))) (, ,) (PP (JJ such) (IN as) (NP (NN water))) (, ,) (NP (NP (NNP H2O)) (PRN (-LRB- -LRB-) (NP (NP (CD two) (NN hydrogen) (NNS atoms)) (VP (VBN bonded) (PP (TO to) (NP (CD one) (NN oxygen))))) (-RRB- -RRB-)))) (CC or) (NP (NP (NN carbon) (NN dioxide)) (, ,) (NP (NNP CO2)) (PRN (-LRB- -LRB-) (NP (NP (CD one) (NN carbon) (NN atom) (NNS bonded)) (PP (TO to) (NP (CD two) (NN oxygen) (NNS atoms)))) (-RRB- -RRB-)))) (. .)))
molecule -- two or more atoms bonded into a single particle, such as water, H2O (two hydrogen atoms bonded to one oxygen) or carbon dioxide, CO2 (one carbon atom bonded to two oxygen atoms).
(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))))))) (. .)))