( ( ( ( Carbon , ) ( with ( four ( valence electrons ) ) ) ) , ) ( ( ( ( ( forms ( covalent bonds ) ) ( to ( ( four ( neighboring ( carbon atoms ) ) ) ( arranged ( toward ( ( the corners ) ( of ( a tetrahedron ) ) ) ) ) ) ) ) , ) ( as ( ( shown ( in ( the figure ) ) ) below ) ) ) . ) )
(ROOT (S (NP (NP (NNP Carbon)) (, ,) (PP (IN with) (NP (CD four) (JJ valence) (NNS electrons))) (, ,)) (VP (VBZ forms) (NP (JJ covalent) (NNS bonds)) (PP (TO to) (NP (NP (CD four) (JJ neighboring) (NN carbon) (NNS atoms)) (VP (VBN arranged) (PP (IN toward) (NP (NP (DT the) (NNS corners)) (PP (IN of) (NP (DT a) (NN tetrahedron)))))))) (, ,) (SBAR (IN as) (S (VP (VBN shown) (PP (IN in) (NP (DT the) (NN figure))) (ADVP (RB below)))))) (. .)))
Carbon, with four valence electrons, forms covalent bonds to four neighboring carbon atoms arranged toward the corners of a tetrahedron, as shown in the figure below.
(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)))))) (. .)))