(SINV (SINV (QTR (QTC (S (BASENP (PRP I)) (VP (VBP have) (VP (ADVP (RB therefore)) (VP (VBN decided) (S (VP (TO to) (VP (VP (VP (VB raise) (NP (BASENP (DT the) (NN level)) (PP (IN of) (BASENP (NN influenza) (NN pandemic) (NN alert))))) (PP (IN from) (BASENP (NN phase) (NN 5)))) (PP (TO to) (BASENP (NN phase) (NN 6)))))))))) (COMMA ,)) (DQR '')) (SINV (SINV (SINV (VP (VBD said)) (NP (NP (BASENP (DT the) (DT the) (NNP WHO) (POS 's)) (NN director)) (BASENP (NNP Margaret) (NNP Chan)))) (PP (IN in) (BASENP (DT a) (NN press) (NN conference)))) (ADVP (RBR earlier) (BASENP (NN today))))) (PERIOD .))