(S (S (BASENP (DT The) (JJ initial) (NN explosion)) (VP (VP (VBD caused) (BASENP (JJ little) (NN damage))) (CONJP (COMMA ,) (CC but)) (VP (VBD attracted) (NP (BASENP (NNS crowds)) (PP (IN of) (BASENP (NNS onlookers))))))) (PERIOD .))