( Macromolecules ( ( are ( ( large molecules ) ( ( made up ) ( from ( small sub-units ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Macromolecules)) (VP (VBP are) (NP (NP (JJ large) (NNS molecules)) (VP (VBN made) (PRT (RP up)) (PP (IN from) (NP (JJ small) (NNS sub-units)))))) (. .)))
Macromolecules are large molecules made up from small sub-units.
(ROOT (S (NP (DT Any) (JJ large) (NN molecule)) (VP (VBZ is) (VP (VBN referred) (PP (TO to) (NP (RB as) (DT a) (NN macromolecule))))) (. .)))