(S [NP-C] [VP] (PUNC .)) ||| [1] [2] . ||| R1=1
(NP-C (DT the) (NN gunman)) ||| qiangshou ||| R2=1
(NP-C (DT the) [NN]) ||| [1] ||| R2a=1
(NN gunman) ||| qiangshou ||| R2b=1
(VP (VBD was) (VP-C [VBN] (PP (IN by) [NP-C]))) ||| bei [2] [1] ||| R3=1
(NP-C (DT the) (NN police)) ||| jingfang ||| R4=1
(VBN killed) ||| jibi ||| R5=1
(VBN killed) ||| killed' ||| R6=1