( Bacteria ( ( are ( ( Eukaryotes ( Prokaryotes ( Protists ( Amphibians Insects ) ) ) ) 2 ) ) . ) )
(ROOT (S (NP (NNS Bacteria)) (VP (VBP are) (NP (NP (NNPS Eukaryotes) (NNPS Prokaryotes) (NNP Protists) (NNPS Amphibians) (NNP Insects)) (NP (CD 2)))) (. .)))
Bacteria are Eukaryotes Prokaryotes Protists Amphibians Insects 2.
(ROOT (S (NP (NNS Scientists)) (VP (VBP think) (SBAR (S (NP (NNS protists)) (VP (VBP are) (NP (DT the) (JJS oldest) (NNS eukaryotes)))))) (. .)))