( ( For instance ) ( , ( carbon ( ( ( ( has ( ( an ( atomic number ) ) ( of six ) ) ) and ) ( therefore ( has ( ( ( six protons ) and ) ( six electrons ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN For) (NP (NN instance))) (, ,) (NP (NN carbon)) (VP (VP (VBZ has) (NP (NP (DT an) (JJ atomic) (NN number)) (PP (IN of) (NP (CD six))))) (CC and) (VP (ADVP (RB therefore)) (VBZ has) (NP (NP (CD six) (NNS protons)) (CC and) (NP (CD six) (NNS electrons))))) (. .)))
For instance, carbon has an atomic number of six and therefore has six protons and six electrons.
(ROOT (S (NP (NNP Carbon) (NNS atoms)) (VP (VBP have) (NP (NP (CD six) (NNS protons)) (CC and) (NP (NP (NNS electrons)) (NP (DT each))))) (. .)))