( ( Carbon 14 ) ( ( has ( ( ( six protons ) and ) ( eight neutrons ) ) ) . ) )
(ROOT (S (NP (NNP Carbon) (CD 14)) (VP (VBZ has) (NP (NP (CD six) (NNS protons)) (CC and) (NP (CD eight) (NNS neutrons)))) (. .)))
Carbon 14 has six protons and eight neutrons.
(ROOT (S (NP (NP (DT A) (NN carbon) (NN atom)) (PP (IN with) (NP (NP (CD 6) (NNS protons)) (CC and) (NP (CD 8) (NNS neutrons))))) (VP (VBZ is) (ADVP (RBR more) (RB specifically)) (VP (VBN known) (PP (IN as) (NP (NN carbon) (CD 14))))) (. .)))
A carbon atom with 6 protons and 8 neutrons is more specifically known as carbon 14.