(S (S (BASENP (NNS Authorities)) (VP (VBP say) (SBAR (IN that) (S (S (BASENP (PRP it)) (VP (VBZ has) (VP (VBN been) (BASENP (QP (RB over) (NN 40)) (NNS years))))) (SBAR (IN since) (S (NP (BASENP (DT some) (NNS parts)) (PP (IN of) (BASENP (DT the) (NN land)))) (VP (VBP have) (VP (VBN caught) (BASENP (NN fire)))))))))) (PERIOD .))