( ( ( providing ( ( a site ) ( for ( many ( of ( ( the ( biochemical reactions ) ) ( of ( the cell ) ) ) ) ) ) ) ) ( ( Cytoskeleton Crisscrossing ) ( ( the cytoplasm ) ( is ( a structure ) ) ) ) ) ( ( called ( ( ( the cytoskeleton ) , ) ( which ( consists ( of ( thread-like ( ( filaments and ) tubules ) ) ) ) ) ) ) . ) )
(ROOT (S (S (VP (VBG providing) (NP (NP (DT a) (NN site)) (PP (IN for) (NP (NP (JJ many)) (PP (IN of) (NP (NP (DT the) (JJ biochemical) (NNS reactions)) (PP (IN of) (NP (DT the) (NN cell)))))))) (NP (NP (NNP Cytoskeleton) (NNP Crisscrossing)) (SBAR (S (NP (DT the) (NN cytoplasm)) (VP (VBZ is) (NP (DT a) (NN structure)))))))) (VP (VBD called) (NP (NP (DT the) (NN cytoskeleton)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ consists) (PP (IN of) (NP (JJ thread-like) (NNS filaments) (CC and) (NNS tubules)))))))) (. .)))
providing a site for many of the biochemical reactions of the cell     Cytoskeleton   Crisscrossing the cytoplasm is a structure called the cytoskeleton, which consists of thread-like filaments  and tubules.
(ROOT (S (NP (DT The) (NN cytoskeleton)) (VP (VBZ is) (NP (NP (DT a) (JJ cellular) (`` ``) (JJ scaffolding) ('' '') (CC or) (`` ``) (NN skeleton) ('' '')) (SBAR (WHNP (WDT that)) (S (VP (VBZ crisscrosses) (NP (DT the) (NN cytoplasm)))))))))