( Quarks ( ( are ( thought ( to ( be ( ( the ( fundamental ( building blocks ) ) ) ( of ( ( matter , ) ( ( from which ) ( ( ( ( protons and ) neutrons ) ( -LRB- ( ( members ( of ( the ( hadron family ) ) ) ) -RRB- ) ) ) ( are constructed ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Quarks)) (VP (VBP are) (VP (VBN thought) (S (VP (TO to) (VP (VB be) (NP (NP (DT the) (JJ fundamental) (NN building) (NNS blocks)) (PP (IN of) (NP (NP (NN matter)) (, ,) (SBAR (WHPP (IN from) (WHNP (WDT which))) (S (NP (NP (NNS protons) (CC and) (NNS neutrons)) (PRN (-LRB- -LRB-) (NP (NP (NNS members)) (PP (IN of) (NP (DT the) (NN hadron) (NN family)))) (-RRB- -RRB-))) (VP (VBP are) (ADJP (VBN constructed))))))))))))) (. .)))
Quarks are thought to be the fundamental building blocks of matter, from which protons and neutrons (members of the hadron family) are constructed.
(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))))))))))) (. .)))