(S (S (BASENP (DT The) (JJ Iranian) (NNP Islamic) (NNP Revolutionary) (NNP Guard)) (VP (VBZ has) (VP (VBN conducted) (NP (BASENP (DT a) (NN missile) (NN test) (NN exercise)) (COMMA ,) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (BASENP (NN nine) (NNS missiles)) (PP (IN of) (BASENP (NN three) (JJ different) (NNS types)))) (VP (VBD were) (VP (VBN launched) (ADVP (RB simultaneously)))))))))) (PERIOD .))