(S (LST (LS :)) (S (LST (LRB -LRB-) (LS c) (RRB -RRB-)) (S (S (S (NP (BASENP (DT the) (NN purpose)) (PP (IN of) (NP (BASENP (NN legislation)) (PP (IN of) (BASENP (DT this) (NN provision)))))) (VP (VBZ is) (ADJP (JJ rational)))) (COMMA ,) (SBAR (IN because) (S (BASENP (DT that)) (VP (VBZ is) (VP (VBN considered) (S (VP (TO to) (VP (VB demand) (NP (NP (BASENP (DT the) (NN child) (POS 's)) (BASENP (JJ tight) (NN connection))) (PP (IN with) (NP (BASENP (NNP Japan) (POS 's)) (NN society)))))))))))) (PERIOD .))))