(S (S (S (NP (BASENP (NNS Hundreds)) (PP (IN of) (BASENP (NNS firemen)))) (VP (VBP have) (VP (VBN been) (VP (VBG fighting) (BASENP (DT the) (NN fire)))))) (CONJP (COMMA ,) (CC but)) (S (BASENP (NNS conditions)) (VP (VBP have) (VP (VBN been) (ADJP (JJ difficult) (PP (IN because) (PP (IN of) (NP (BASENP (JJ strong) (NNS winds)) (CC and) (NP (BASENP (NNS temperatures)) (VP (VBG soaring) (NP (QP (ADVP (RB well) (RB over)) (NN 40)) (BASENP (NNS degrees) (NNP Celsius))))))))))))) (PERIOD .))