( ( Supplemental ( water applications ) ) ( ( ( benefit ( the tree ) ) ( during ( periods ( of drought ) ) ) ) . ) )
(ROOT (S (NP (NN Supplemental) (NN water) (NNS applications)) (VP (VBP benefit) (NP (DT the) (NN tree)) (PP (IN during) (NP (NP (NNS periods)) (PP (IN of) (NP (NN drought)))))) (. .)))
Supplemental water applications benefit the tree during periods of drought.
(ROOT (S (SBAR (IN Because) (S (NP (NNS trees)) (VP (VBP add) (NP (NN water) (NN vapor)) (PP (TO to) (NP (NN air)))))) (, ,) (S (VP (VBG cutting) (PRT (RP down)) (NP (NNS forests)))) (VP (VBZ leads) (PP (TO to) (NP (NP (JJR longer) (NNS periods)) (PP (IN of) (NP (NN drought)))))) (. .)))