( However ( ( , ( ( ( periodic ( short-term droughts ) ) ( are ( common ( in ( ( New ( Hampshire 's ) ) forests ) ) ) ) ) , ) ) ( ( helping trees ) ( adapt . ) ) ) )
(ROOT (S (ADVP (RB However)) (PRN (, ,) (S (NP (JJ periodic) (JJ short-term) (NNS droughts)) (VP (VBP are) (ADJP (JJ common) (PP (IN in) (NP (NP (NNP New) (NNP Hampshire) (POS 's)) (NNS forests)))))) (, ,)) (NP (VBG helping) (NNS trees)) (VP (VBP adapt)) (. .)))
However, periodic short-term droughts are common in New Hampshire's forests, helping trees adapt.
(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)))))) (. .)))