(S (S (NP (BASENP (DT A) (NN building)) (PP (IN in) (NP (NP (BASENP (NNP Iran) (POS 's)) (NN capital)) (BASENP (NNP Tehran))))) (VP (VP (VBD collapsed) (BASENP (NN today))) (CC and) (VP (VBD killed) (NP (QP (ADVP (IN at) (JJS least)) (NN 19)) (NNS people))))) (PERIOD .))