(S (S (BASENP (JJ Thai) (JJ low-cost) (NN air) (NN carrier) (NNP One-Two-Go) (NNPS Airlines)) (VP (VBZ has) (VP (VBN announced) (SBAR (IN that) (S (BASENP (PRP it)) (VP (MD will) (VP (VB be) (VP (VP (VP (VBG grounding) (NP (BASENP (DT all) (NN 16)) (PP (IN of) (BASENP (PRPD its) (NNS aircraft))))) (ADVP (RB immediately))) (PP (IN until) (BASENP (NNP September) (NN 15))))))))))) (PERIOD .))