( ( ( ( ( ( The tube ) ( is ( ( ( the ( budding brain ) ) and ) ( spinal cord ) ) ) ) , ) and ) ( ( their ( ( gloriously fragile ) network ) ) ( is ( ( ( our ( nervous system ) ) , ) ( ( the ( most complex ) ) ( of ( systems ( in ( the ( human body ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT The) (NN tube)) (VP (VBZ is) (NP (NP (DT the) (VBG budding) (NN brain)) (CC and) (NP (JJ spinal) (NN cord))))) (, ,) (CC and) (S (NP (PRP$ their) (ADJP (RB gloriously) (JJ fragile)) (NN network)) (VP (VBZ is) (NP (NP (PRP$ our) (JJ nervous) (NN system)) (, ,) (NP (NP (DT the) (JJS most) (NN complex)) (PP (IN of) (NP (NP (NNS systems)) (PP (IN in) (NP (DT the) (JJ human) (NN body))))))))) (. .)))
The tube is the budding brain and spinal cord, and their gloriously fragile network is our nervous system, the most complex of systems in the human body.
(ROOT (S (NP (DT The) (NN brain)) (VP (VBZ is) (NP (NP (DT the) (ADJP (RBS most) (JJ complex)) (NN organ)) (PP (IN in) (NP (DT the) (JJ human) (NN body))))) (. .)))