( ( ( ( ( B-all protists ) ( can ( be ( propagated ( as ( single cells ) ) ) ) ) ) and ) ( ( all protists ) ( are eukaryotes ) ) ) . )
(ROOT (S (S (NP (NNP B-all) (NNS protists)) (VP (MD can) (VP (VB be) (VP (VBN propagated) (PP (IN as) (NP (JJ single) (NNS cells))))))) (CC and) (S (NP (DT all) (NNS protists)) (VP (VBP are) (ADJP (JJ eukaryotes)))) (. .)))
B-all protists can be propagated as single cells and all protists are eukaryotes.
(ROOT (S (NP (JJ Many) (NNS scientists)) (VP (VBP think) (SBAR (S (NP (NNS protists)) (VP (VBP are) (NP (DT the) (JJS oldest) (NNS eukaryotes)))))) (. .)))