鎮火のための努力は失敗し、その後、掘削装置は湾の底に沈んだ。
(S (S (S (PP-SBJ (NP (PP (NP (PP (BASENP (NN 鎮火)) (IN の)) (NN ため)) (IN の)) (NN 努力)) (IN は)) (VP (NN 失敗) (VBV し))) (COMMA 、) (S (ADVP (RB その後)) (COMMA 、) (S (PP-SBJ (BASENP (NN 掘削) (NN 装置)) (IN は)) (VP (PP (NP (PP (BASENP (NN 湾)) (IN の)) (NN 底)) (IN に)) (VP (VBV 沈ん) (VP (MD だ))))))) (PERIOD 。))