(S (S (S (PP (IN At) (NP (BASENP (DT the) (NN top)) (PP (IN of) (BASENP (DT the) (NN hill))))) (COMMA ,) (S (BASENP (EX there)) (VP (VBD were) (NP (BASENP (NN five) (NN fire) (NNS trucks)) (CC and) (BASENP (NN one) (NN paramedic) (NN unit)))))) (COLON ;) (S (NP (BASENP (DT the) (NN three) (JJ main) (NNS entrances)) (PP (TO to) (BASENP (DT the) (NN mountain)))) (VP (VBD were) (VP (VP (VBN barricaded) (PRT (RP off))) (PP (IN by) (BASENP (NN fire) (NNS trucks))))))) (PERIOD .))