(S (S (S (VP (VBN Worried) (SBAR (S (BASENP (DT the) (NN incident)) (VP (MD could) (VP (VB cause) (BASENP (DT a) (NN fuel) (NN leak)))))))) (COMMA ,) (S (BASENP (NN staff)) (VP (VBD decided) (S (VP (TO to) (VP (VP (VB use) (NP (BASENP (DT the) (NN cork)) (PP (IN of) (NP (BASENP (DT a) (NN wine) (NN bottle)) (VP (VBN found) (PP (IN in) (BASENP (DT the) (NN buffet) (NN car)))))))) (COMMA ,) (VP (TO to) (VP (VB block) (BASENP (DT the) (NN hole)))))))))) (PERIOD .))