( ( those ( of ( Lithium-7 ( -LRB- ( ( 7 Li ) -RRB- ) ) ) ) ) ( ( have ( ( ( three protons ) and ) ( four neutrons ) ) ) . ) )
(ROOT (S (NP (NP (DT those)) (PP (IN of) (NP (NP (NNS Lithium-7)) (PRN (-LRB- -LRB-) (NP (QP (CD 7) (CD Li))) (-RRB- -RRB-))))) (VP (VBP have) (NP (NP (CD three) (NNS protons)) (CC and) (NP (CD four) (NNS neutrons)))) (. .)))
those of Lithium-7 ( 7 Li) have three protons and four neutrons.
(ROOT (S (NP (NNP Lithium)) (VP (VBZ has) (NP (CD three) (NNS electrons))) (. .)))