(S (S (BASENP (NNP South) (NNP Korea)) (VP (VBZ has) (VP (VBN lost) (NP (NP (BASENP (NN contact)) (PP (IN with) (BASENP (PRPD its) (NNP Naro-1) (NN rocket)))) (COMMA ,) (NP (BASENP (QP (RB just) (NN 137)) (NNS seconds)) (PP (IN after) (BASENP (NN take-off)))))))) (PERIOD .))