( ( ( Prokaryote ( A ( single-celled organism ) ) ) ( with ( ( ( a ( simple ( internal structure ) ) ) and ) ( no nucleus ) ) ) ) . )
(ROOT (S (VP (VB Prokaryote) (NP (DT A) (JJ single-celled) (NN organism)) (PP (IN with) (NP (NP (DT a) (JJ simple) (JJ internal) (NN structure)) (CC and) (NP (DT no) (NN nucleus))))) (. .)))
Prokaryote A single-celled organism with a simple internal structure and no nucleus.
(ROOT (S (NP (DT A) (JJ single-celled) (NN prokaryotic)) (VP (VBZ is) (NP (DT a) (NNS bacteria))) (. .)))