( ( Prokaryotic cells ) ( ( ( ( ( are usually ) ( single-celled organisms ) ) , ) ( while ( ( eukaryotic cells ) ( can ( be ( ( either ( ( single-celled or ) part ) ) ( of ( multicellular organisms ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Prokaryotic) (NNS cells)) (VP (VBP are) (ADVP (RB usually)) (NP (JJ single-celled) (NNS organisms)) (, ,) (SBAR (IN while) (S (NP (JJ eukaryotic) (NNS cells)) (VP (MD can) (VP (VB be) (NP (NP (DT either) (NN single-celled) (CC or) (NN part)) (PP (IN of) (NP (NN multicellular) (NNS organisms))))))))) (. .)))
Prokaryotic cells are usually single-celled organisms, while eukaryotic cells can be either single-celled or part of multicellular organisms.
(ROOT (S (NP (JJ Single-celled) (NNS organisms)) (VP (VBP are) (ADJP (JJ prokaryotes))) (. .)))