(S (S (BASENP (NNP ABC)) (VP (ADVP (RB also)) (VP (VBZ reports) (SBAR (IN that) (S (NP (BASENP (NNS exchanges)) (PP (IN of) (BASENP (JJ small) (NNS arms) (NN fire)))) (VP (VP (VBD took) (BASENP (NN place))) (PP (ADVP (RB shortly)) (PP (IN after) (BASENP (DT the) (NN explosion)))))))))) (PERIOD .))