(S (S (ADVP (BASENP (NN Five) (NNS hours)) (RBR later)) (COMMA ,) (S (S (BASENP (DT a) (NN warning) (NN call)) (VP (VBD was) (VP (VBN received) (PP (IN in) (BASENP (DT the) (NNP Basque) (NN fire) (NN service)))))) (S (VP (VBG telling) (SBAR (IN that) (S (BASENP (NN four) (NNS bombs)) (VP (VBD were) (VP (VBN planted) (PP (IN on) (NP (BASENP (DT the) (NNS beaches)) (PP (IN of) (NP (NP (BASENP (NNP Laredo)) (CC and) (BASENP (NNP Noja))) (COMMA ,) (PP (IN in) (NP (BASENP (DT the) (JJ northern) (JJ Spanish) (NN province)) (PP (IN of) (BASENP (NNP Cantabria))))))))))))))))) (PERIOD .))