(S (S (PP (VBG According) (PP (TO to) (NP (BASENP (NNP Japan) (POS 's)) (NP (BASENP (NN Act)) (PP (IN on) (BASENP (NN nationality))))))) (COMMA ,) (S (NP (NP (BASENP (DT a) (JJ non-Japanese) (NN child)) (PRN (LRB -LRB-) (PP (IN under) (BASENP (NN 20))) (RRB -RRB-))) (SBAR (WHNP (WP who)) (S (VP (VBD was) (VP (PP (IN after) (BASENP (PRPD its) (NN birth))) (VP (VBN legitimated) (PP (IN by) (BASENP (NN marriage) (CC and) (NN acknowledgment))))))))) (VP (MD can) (VP (VP (VB acquire) (BASENP (JJ Japanese) (NN nationality))) (PP (IN by) (S (VP (VBG filing) (NP (BASENP (NN notification)) (COMMA ,) (PP (IN with) (NP (BASENP (DT some) (NNS requirements)) (SBAR (WHNP (WDT which)) (S (BASENP (DT the) (NNS plaintiffs)) (VP (VBD had) (VP (ADVP (RB already)) (VBN fulfilled))))))))))))))) (PERIOD .))