( ( Is ( ( the ( major osmole ) ) ( of ( milk ( -LRB- ( ( the ( primary ( component ( that ( ( draws water ) ( into ( the gland ) ) ) ) ) ) ) -RRB- ) ) ) ) ) ) . )
(ROOT (S (VP (VBZ Is) (NP (NP (DT the) (JJ major) (NN osmole)) (PP (IN of) (NP (NP (NN milk)) (PRN (-LRB- -LRB-) (NP (DT the) (JJ primary) (NN component) (SBAR (WHNP (WDT that)) (S (VP (VBZ draws) (NP (NN water)) (PP (IN into) (NP (DT the) (NN gland))))))) (-RRB- -RRB-)))))) (. .)))
Is the major osmole of milk (the primary component that draws water into the gland).
(ROOT (S (NP (NNP Water)) (VP (VBZ is) (NP (NP (DT the) (JJ main) (NN component)) (PP (IN of) (NP (NN milk))))) (. .)))