(S (S (PP-SBJ (BASENP (NN 目撃) (NN 者)) (IN は)) (VP (PP-OBJ (NP (S (PP-SBJ (BASENP (NN 男性)) (IN が)) (VP (PP (BASENP (NN 海)) (IN に)) (VP (VP (VBO さらわ) (VP (VBV れ))) (VP (MD た))))) (NN ところ)) (IN を)) (VP (VBV 見) (VP (MD た))))) (PERIOD 。))
目撃 者 は 男性 が 海 に さらわ れ た ところ を 見 た 。
Witnesses looked on as the man was swept out to sea .