( ( ( ( Metaphase 2 ) - ) ( When ( chromosomes ( ( line up ) ( in ( ( the center ) ( of ( the cell ) ) ) ) ) ) ) ) . )
(ROOT (X (NP (NN Metaphase) (CD 2)) (: -) (FRAG (SBAR (WHADVP (WRB When)) (S (NP (NNS chromosomes)) (VP (VBP line) (PRT (RP up)) (PP (IN in) (NP (NP (DT the) (NN center)) (PP (IN of) (NP (DT the) (NN cell))))))))) (. .)))
Metaphase 2- When chromosomes line up in the center of the cell.
(ROOT (S (PP (IN In) (NP (JJ metaphase) (NN ii) (NN stage))) (, ,) (NP (NNS chromosomes)) (VP (VBP line) (ADVP (RB up) (NP (CD one)) (PP (IN on) (NP (NP (NN top)) (PP (IN of) (NP (DT each) (JJ other)))))) (PP (IN along) (NP (NP (DT the) (NN middle)) (PP (IN of) (NP (DT the) (NN cell))))) (, ,) (ADJP (JJ similar) (PP (TO to) (SBAR (WHADVP (WRB how)) (S (NP (PRP they)) (VP (VBP line) (PRT (RP up)) (PP (IN in) (NP (NNS mitosis))))))))) (. .)))