(S (S (ADVP (RB However)) (S (BASENP (PRP it)) (VP (VBZ has) (VP (VBN been) (VP (VP (VBN suggested) (PP (IN by) (NP (BASENP (DT the) (NN select) (NN committee)) (VP (ADVP (RB previously)) (VP (VBG researching) (NP (BASENP (DT the) (NN drinking) (NN problem)) (PP (IN in) (BASENP (NNP New) (NNP Zealand))))))))) (SBAR (IN that) (S (BASENP (EX there)) (VP (VP (VBZ is) (NP (BASENP (ADJP (JJ little) (JJ hard)) (NN evidence)) (SBAR (S (NP (NP (BASENP (NN 18) (CC &) (NN 19)) (NN year)) (NNS olds)) (VP (VBP are) (VP (VP (VBG buying) (BASENP (NN alcohol))) (PP (IN for) (BASENP (NNS minors))))))))) (COMMA ,) (PP (IN with) (S (BASENP (DT the) (JJS largest) (NN problem)) (VP (ADVP (RB instead)) (VP (VBG being) (NP (NP (BASENP (DT the) (NN purchasing)) (PP (IN of) (BASENP (NN alcohol)))) (PP (IN by) (NP (BASENP (NNS parents)) (PP (IN for) (BASENP (PRPD their) (NNS children)))))))))))))))))) (PERIOD .))