( ( eukaryotes ( -LRB- ( ( ( ( ( ( ( ( protist , ) fungi ) , ) plants ) , ) and ) animals ) -RRB- ) ) ) ; )
(ROOT (NP (NP (NNS eukaryotes)) (PRN (-LRB- -LRB-) (NP (NP (NN protist)) (, ,) (NP (NNS fungi)) (, ,) (NP (NNS plants)) (, ,) (CC and) (NP (NNS animals))) (-RRB- -RRB-)) (: ;)))
eukaryotes (protist, fungi, plants, and animals);
(ROOT (S (NP (NNS Scientists)) (VP (VBP think) (SBAR (S (NP (NNS protists)) (VP (VBP are) (NP (DT the) (JJS oldest) (NNS eukaryotes)))))) (. .)))