( ( In ( that ( extraordinary plasma ) ) ) ( , ( ( ( ( ( elementary particles ) , ) ( called ( ( quarks and ) gluons ) ) ) , ) ( ( ( ( roam freely ) ( like ( particles ( in ( a gas ) ) ) ) ) ( instead ( of ( being ( ( ( ( shackled together ) ( into ( ( protons and ) neutrons ) ) ) , ) ( as ( they ( usually are ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (DT that) (JJ extraordinary) (NN plasma))) (, ,) (NP (NP (JJ elementary) (NNS particles)) (, ,) (VP (VBN called) (NP (NNS quarks) (CC and) (NNS gluons))) (, ,)) (VP (VBP roam) (ADVP (RB freely)) (PP (IN like) (NP (NP (NNS particles)) (PP (IN in) (NP (DT a) (NN gas))))) (PP (RB instead) (IN of) (S (VP (VBG being) (VP (VBN shackled) (ADVP (RB together)) (PP (IN into) (NP (NNS protons) (CC and) (NNS neutrons))) (, ,) (SBAR (IN as) (S (NP (PRP they)) (ADVP (RB usually)) (VP (VBP are))))))))) (. .)))
In that extraordinary plasma, elementary particles, called quarks and gluons, roam freely like particles in a gas instead of being shackled together into protons and neutrons, as they usually are.
(ROOT (S (NP (NP (DT The) (CD two) (JJ main) (JJ fundamental) (NNS particles)) (SBAR (WHNP (WDT that)) (S (VP (VBP make) (PRT (RP up)) (NP (NNS neutrons)))))) (VP (VBP are) (NP (NNS quarks) (CC and) (NNS gluons))) (. .)))