(S (S (PP (IN In) (BASENP (NNP January))) (COMMA ,) (S (BASENP (DT the) (JJ Indonesian) (NN government)) (VP (VP (VBD held) (BASENP (DT a) (JJ special) (NN energy) (NN summit))) (S (VP (TO to) (VP (VP (VB attract) (BASENP (NN investment))) (PP (IN in) (BASENP (PRPD their) (NN energy) (NN infrastructure))))))))) (PERIOD .))