( ( ( The ( four ( valence electrons ) ) ) ( of ( each ( carbon atom ) ) ) ) ( ( participate ( in ( ( the formation ) ( of ( ( very strong ) ( covalent bonds ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (CD four) (JJ valence) (NNS electrons)) (PP (IN of) (NP (DT each) (NN carbon) (NN atom)))) (VP (VBP participate) (PP (IN in) (NP (NP (DT the) (NN formation)) (PP (IN of) (NP (ADJP (RB very) (JJ strong)) (NN covalent) (NNS bonds)))))) (. .)))
The four valence electrons of each carbon atom participate in the formation of very strong covalent bonds.
(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)))))) (. .)))