( Quarks ( ( are ( particles ( that ( compose ( ( ( the ( ( more familiar ) protons ) ) and ) neutrons ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Quarks)) (VP (VBP are) (NP (NP (NNS particles)) (SBAR (WHNP (WDT that)) (S (VP (VBP compose) (NP (NP (DT the) (ADJP (RBR more) (JJ familiar)) (NNS protons)) (CC and) (NP (NNS neutrons)))))))) (. .)))
Quarks are particles that compose the more familiar protons and neutrons.
(ROOT (S (NP (NNS Protons) (CC and) (NNS neutrons)) (VP (VBP are) (VP (VBN made) (PP (IN of) (NP (NP (NNS quarks)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (NP (NP (JJ fundamental) (NNS particles)) (PP (IN of) (NP (NN matter))))))))))) (. .)))