( ( ( ( ( ( Particles ( like ( ( neutrons & ) protons ) ) ) ( are hadrons ) ) , ) and ) ( ( each hadron ) ( is ( composed ( of ( three quarks ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (NNS Particles)) (PP (IN like) (NP (NNS neutrons) (CC &) (NNS protons)))) (VP (VBP are) (ADJP (JJ hadrons)))) (, ,) (CC and) (S (NP (DT each) (NN hadron)) (VP (VBZ is) (VP (VBN composed) (PP (IN of) (NP (CD three) (NNS quarks)))))) (. .)))
Particles like neutrons &amp; protons are hadrons, and each hadron is composed of three 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))))) (. .)))