( (IP (IP (IP-ADV (NP-SBJ (-NONE- *pro*)) (VP (VV 到) (AS 了) (NP-OBJ (NN 窗口)))) (PU ,) (NP-SBJ (-NONE- *pro*)) (VP (ADVP (AD 立刻)) (VP (SB 被) (VP (VRD (VV 扔) (AS 了) (VV 回来)))))) (PU :) (IP (NP-SBJ (NN 材料)) (VP (VV 不齐))) (PU !))) arg0: 材料