( ( ( ( writeln -LRB- ) ( ' ( Gell-Mann ( believed ( that ( ( ( ( each proton ) and ) ( each neutron ) ) ( is ( ( made up ) ( of ( three ( ( even smaller ) particles ) ) ) ) ) ) ) ) ) ) ) -- ) ( ( particles ( he ( named quarks ) ) ) . ) )
(ROOT (S (NP (NP (NN writeln)) (-LRB- -LRB-) (VP (`` ') (ADVP (RB Gell-Mann)) (VBN believed) (SBAR (IN that) (S (NP (NP (DT each) (NN proton)) (CC and) (NP (DT each) (NN neutron))) (VP (VBZ is) (VP (VBN made) (PRT (RP up)) (PP (IN of) (NP (CD three) (ADJP (RB even) (JJR smaller)) (NNS particles)))))))) (: --)) (VP (VBZ particles) (SBAR (S (NP (PRP he)) (VP (VBD named) (NP (NNS quarks)))))) (. .)))
writeln(' Gell-Mann believed that each proton and each neutron is made up of three even smaller particles -- particles he named quarks.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD three) (NNS quarks)) (PP (IN in) (NP (DT each) (NN proton) (CC and) (NN neutron))))) (. .)))