As the Tokugawa shoguns had feared, this opening of the floodgates of Western culture after such prolonged isolation had a traumatic effect on Japanese society.
( ( As ( ( the ( Tokugawa shoguns ) ) ( had feared ) ) ) ( , ( ( ( this opening ) ( of ( ( the floodgates ) ( of ( ( Western culture ) ( after ( such ( prolonged isolation ) ) ) ) ) ) ) ) ( ( had ( ( a ( traumatic effect ) ) ( on ( Japanese society ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN As) (S (NP (DT the) (NNP Tokugawa) (NNS shoguns)) (VP (VBD had) (VP (VBN feared))))) (, ,) (NP (NP (DT this) (NN opening)) (PP (IN of) (NP (NP (DT the) (NNS floodgates)) (PP (IN of) (NP (NP (JJ Western) (NN culture)) (PP (IN after) (NP (JJ such) (JJ prolonged) (NN isolation)))))))) (VP (VBD had) (NP (NP (DT a) (JJ traumatic) (NN effect)) (PP (IN on) (NP (JJ Japanese) (NN society))))) (. .)))
There was no traumatic effect on japanese society, when the floodgates of Western culture opened.
( There ( ( ( ( was ( ( no ( traumatic effect ) ) ( on ( japanese society ) ) ) ) , ) ( when ( ( ( the floodgates ) ( of ( Western culture ) ) ) opened ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBD was) (NP (NP (DT no) (JJ traumatic) (NN effect)) (PP (IN on) (NP (JJ japanese) (NN society)))) (, ,) (SBAR (WHADVP (WRB when)) (S (NP (NP (DT the) (NNS floodgates)) (PP (IN of) (NP (JJ Western) (NN culture)))) (VP (VBD opened))))) (. .)))