( ( The ( carbon atom ) ) ( ( ( ( ( has ( ( a valence ) ( of four ) ) ) , ) and ) ( can ( ( combine ( with ( ( ( ( ( ( ( one , ) two ) , ) three ) , ) or ) ( ( four ( other ( carbon atoms ) ) ) ( in addition ) ) ) ) ) ( to ( ( a ( wide range ) ) ( of ( ( other kinds ) ( of atoms ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN carbon) (NN atom)) (VP (VP (VBZ has) (NP (NP (DT a) (NN valence)) (PP (IN of) (NP (CD four))))) (, ,) (CC and) (VP (MD can) (VP (VB combine) (PP (IN with) (NP (NP (CD one)) (, ,) (NP (CD two)) (, ,) (NP (CD three)) (, ,) (CC or) (NP (NP (CD four) (JJ other) (NN carbon) (NNS atoms)) (PP (IN in) (NP (NN addition)))))) (PP (TO to) (NP (NP (DT a) (JJ wide) (NN range)) (PP (IN of) (NP (NP (JJ other) (NNS kinds)) (PP (IN of) (NP (NNS atoms)))))))))) (. .)))
The carbon atom has a valence of four, and can combine with one, two, three, or four other carbon atoms in addition to a wide range of other kinds of atoms.
(ROOT (S (NP (CD Four) (JJ valence) (NNS electrons)) (VP (MD can) (VP (VB be) (VP (VBN found) (PP (IN in) (NP (DT a) (NN carbon) (NN atom)))))) (. .)))