saving that did not finance domestic investment would increase net foreign investment and improve the current account balance.
( ( saving ( that ( ( did not ) ( finance ( domestic investment ) ) ) ) ) ( ( would ( ( ( increase ( net ( foreign investment ) ) ) and ) ( improve ( the ( current ( account balance ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NN saving)) (SBAR (WHNP (WDT that)) (S (VP (VBD did) (RB not) (VP (VB finance) (NP (JJ domestic) (NN investment))))))) (VP (MD would) (VP (VP (VB increase) (NP (JJ net) (JJ foreign) (NN investment))) (CC and) (VP (VB improve) (NP (DT the) (JJ current) (NN account) (NN balance))))) (. .)))
Saving could increase net foreign investment  substantially and quickly. 
( Saving ( ( could ( ( increase ( net ( foreign investment ) ) ) ( ( substantially and ) quickly ) ) ) . ) )
(ROOT (S (NP (NNP Saving)) (VP (MD could) (VP (VB increase) (NP (JJ net) (JJ foreign) (NN investment)) (ADVP (RB substantially) (CC and) (RB quickly)))) (. .)))