( ( This cell ) ( ( is ( called ( a ( diploid cell ) ) ) ) . ) )
(ROOT (S (NP (DT This) (NN cell)) (VP (VBZ is) (VP (VBN called) (NP (DT a) (JJ diploid) (NN cell)))) (. .)))
This cell is called a diploid cell.
(ROOT (S (NP (DT A) (JJ diploid) (NN cell)) (VP (VBZ is) (NP (NP (DT a) (NN cell)) (PP (IN with) (NP (CD two) (NNS chromosomes))))) (. .)))