( ( To ( do ( a ( profitable volume ) ) ) ) ( , ( they ( ( must ( occupy ( ( large amounts ) ( of space ) ) ) ) . ) ) ) )
(ROOT (S (S (VP (TO To) (VP (VB do) (NP (DT a) (JJ profitable) (NN volume))))) (, ,) (NP (PRP they)) (VP (MD must) (VP (VB occupy) (NP (NP (JJ large) (NNS amounts)) (PP (IN of) (NP (NN space)))))) (. .)))
To do a profitable volume, they must occupy large amounts of space.
(ROOT (S (NP (NN Volume)) (VP (VBZ is) (NP (NP (DT a) (NN measure)) (PP (IN of) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NN space)))))) (SBAR (IN that) (S (NP (NP (DT a) (NN substance)) (CC or) (NP (DT an) (NN object))) (VP (VBZ occupies))))) (. .)))