(S (S (BASENP (PRP It)) (VP (VBZ is) (VP (VBN believed) (SBAR (IN that) (S (BASENP (DT the) (NN fire)) (VP (VBD affected) (NP (QP (ADVP (IN at) (JJS least)) (NN five)) (BASENP (JJ other) (NNS homes))))))))) (PERIOD .))