( We ( ( ( need glucose ) ( because ( it ( provides ( energy ( for ( ( ( ( ( ( our brain ) , ) ( central ( nervous system ) ) ) , ) and ) ( all ( of ( ( our ( bodies ' ) ) cells ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP need) (NP (NN glucose)) (SBAR (IN because) (S (NP (PRP it)) (VP (VBZ provides) (NP (NP (NN energy)) (PP (IN for) (NP (NP (PRP$ our) (NN brain)) (, ,) (NP (JJ central) (JJ nervous) (NN system)) (, ,) (CC and) (NP (NP (DT all)) (PP (IN of) (NP (NP (PRP$ our) (NNS bodies) (POS ')) (NNS cells))))))))))) (. .)))
We need glucose because it provides energy for our brain, central nervous system, and all of our bodies' cells.
(ROOT (S (NP (DT All) (NNS cells)) (VP (VBP need) (NP (NP (NN glucose)) (PP (IN for) (NP (NN energy))))) (. .)))