( ( ( ( ( This ( primordial soup ) ) , ) ( called ( a ( ` ( quark-gluon ( plasma ' ) ) ) ) ) ) , ) ( ( is ( ( a mixture ) ( of ( ( the ( building blocks ) ) ( of ( ( the ( fundamental particles ) ) ( that ( ( make up ) ( atomic nuclei ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT This) (JJ primordial) (NN soup)) (, ,) (VP (VBN called) (NP (DT a) (`` `) (JJ quark-gluon) (NN plasma) ('' '))) (, ,)) (VP (VBZ is) (NP (NP (DT a) (NN mixture)) (PP (IN of) (NP (NP (DT the) (NN building) (NNS blocks)) (PP (IN of) (NP (NP (DT the) (JJ fundamental) (NNS particles)) (SBAR (WHNP (WDT that)) (S (VP (VBP make) (PRT (RP up)) (NP (JJ atomic) (NNS nuclei))))))))))) (. .)))
This primordial soup, called a 'quark-gluon plasma', is a mixture of the building blocks of the fundamental particles that make up atomic nuclei.
(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))) (. .)))