( It ( ( takes ( ( ( ( ( three quarks ) , ) ( one ( of ( each ( ` ( color ' ) ) ) ) ) ) , ) ( to ( ( make up ) ( a ( ( proton or ) neutron ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ takes) (S (NP (NP (CD three) (NNS quarks)) (, ,) (NP (NP (CD one)) (PP (IN of) (NP (DT each) (`` `) (NN color) ('' ')))) (, ,)) (VP (TO to) (VP (VB make) (PRT (RP up)) (NP (DT a) (NN proton) (CC or) (NN neutron)))))) (. .)))
It takes three quarks, one of each 'color', to make up a proton or neutron.
(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))))) (. .)))