(S (S (S (BASENP (DT The) (NN plane)) (VP (ADVP (RB reportedly)) (VP (VP (VP (VBD skidded) (PRT (RP off))) (BASENP (DT the) (JJ wet) (NN runway))) (COMMA ,) (VP (VBD crossed) (BASENP (DT a) (JJ busy) (NN thoroughfare)))))) (SBAR (IN before) (S (VP (VBG careening) (PP (IN into) (NP (NP (DT a) (NP (BASENP (NN fuel) (NN depot)) (CC and) (BASENP (NN warehouse)))) (VP (ADVP (RB ultimately)) (VP (VBG bursting) (PP (IN into) (BASENP (NNS flames))))))))))) (PERIOD .))