(S (S (BASENP (DT A) (NN car) (NN bomb)) (VP (VP (VBD exploded) (BASENP (NN today))) (PP (IN at) (NP (BASENP (DT the) (NNS gates)) (PP (IN of) (NP (BASENP (DT a) (NNP U.S.) (JJ military) (NN base)) (COMMA ,) (PP (ADVP (RB just)) (PP (IN outside) (NP (BASENP (DT the) (JJ Afghan) (NN capital)) (PP (IN of) (BASENP (NNP Kabul)))))))))))) (PERIOD .))