( Mitosis ( ( is ( subdivided ( into ( four phases ) ) ) ) . ) )
(ROOT (S (NP (NNS Mitosis)) (VP (VBZ is) (VP (VBN subdivided) (PP (IN into) (NP (CD four) (NNS phases))))) (. .)))
Mitosis is subdivided into four phases.
(ROOT (S (NP (NNS Mitosis)) (ADVP (RB actually)) (VP (VBZ occurs) (PP (IN in) (NP (CD four) (NNS phases)))) (. .)))
Mitosis actually occurs in four phases.