(S (S (PP-SBJ (BASENP (NN 彼)) (IN は)) (COMMA 、) (VP (PP-OBJ (NP (PP (NP (PP (BASENP (NN 手術) (NN 不能)) (IN の)) (NN 脳腫瘍)) (IN の)) (NN 合併症)) (IN を)) (VP (VP (VBV 患っ) (INTE て)) (VP (VBV い) (VP (MD た)))))) (PERIOD 。))
彼 は 、 手術 不能 の 脳腫瘍 の 合併症 を 患っ て い た 。
He had been suffering from complications of an inoperable brain tumor .