( What ( ( is ( ( the function ) ( of ( ( ( the ( cell 's ) ) cytoskeleton ) 20 ) ) ) ) . ) )
(ROOT (SBARQ (WHNP (WP What)) (SQ (VBZ is) (NP (NP (DT the) (NN function)) (PP (IN of) (NP (NP (DT the) (NN cell) (POS 's)) (JJ cytoskeleton) (CD 20))))) (. .)))
What is the function of the cell's cytoskeleton 20.
(ROOT (S (NP (DT The) (NN cytoskeleton)) (VP (VBZ is) (NP (NP (DT the) (NN skeleton)) (PP (IN of) (NP (DT the) (NN cell))))) (. .)))