The aggregate effect on the amount of federal government saving is what affects the level of national saving and economic growth.
( ( ( The ( aggregate effect ) ) ( on ( ( the amount ) ( of ( federal ( government saving ) ) ) ) ) ) ( ( is ( what ( affects ( ( the level ) ( of ( ( ( national saving ) and ) ( economic growth ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ aggregate) (NN effect)) (PP (IN on) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (JJ federal) (NN government) (NN saving)))))) (VP (VBZ is) (SBAR (WHNP (WP what)) (S (VP (VBZ affects) (NP (NP (DT the) (NN level)) (PP (IN of) (NP (NP (JJ national) (NN saving)) (CC and) (NP (JJ economic) (NN growth))))))))) (. .)))
Federal government saving affects economic growth.
( ( Federal ( government saving ) ) ( ( affects ( economic growth ) ) . ) )
(ROOT (S (NP (NNP Federal) (NN government) (NN saving)) (VP (VBZ affects) (NP (JJ economic) (NN growth))) (. .)))