(S (S (S (NP (QP (ADVP (IN At) (JJS least)) (NN one)) (NN person)) (VP (VBZ has) (VP (VBN been) (VP (VBN killed))))) (CC and) (S (NP (QP (ADVP (IN at) (JJS least)) (NN thirty))) (VP (VBD were) (VP (VBN injured) (PP (IN as) (NP (BASENP (DT the) (NN result)) (PP (IN of) (NP (NP (BASENP (DT a) (NN fire)) (PP (IN in) (NP (NP (BASENP (DT the) (NN city)) (PP (IN of) (BASENP (NNP Lagos)))) (PP (IN in) (BASENP (NNP Nigeria)))))) (PP (IN after) (NP (BASENP (DT an) (NN explosion)) (PP (IN in) (NP (BASENP (DT a) (NN building)) (PP (IN with) (NP (BASENP (NNS fireworks)) (VP (VBN stored) (PP (IN in) (BASENP (PRP it)))))))))))))))))) (PERIOD .))