(S (S (S (SBAR (S (PP-SBJ (BASENP (NN 彼)) (IN は)) (VP (PP-OBJ (NP (PP (BASENP (NN 犯罪) (NN 者)) (IN の)) (NN 手首)) (IN を)) (VBV 掴ん))) (INCON で)) (S-NSBJ-NOBJ (VP (VBV 取り押さえ)))) (COMMA 、) (S-NSBJ (VP (SBAR (SBAR (S (ADVP (RB 何故)) (S-NSBJ (VP (PP-OBJ (BASENP (DT こんな) (NN こと)) (IN を)) (VP (VBV し) (VP (MD た)))))) (NN の)) (INFKB か)) (VP (VBV 尋ね) (VP (MD た)))))) (PERIOD 。))
彼 は 犯罪 者 の 手首 を 掴ん で 取り押さえ 、 何故 こんな こと を し た の か 尋ね た 。
He took hold of the culprit , grasping his wrist , asking him why he did it .