 
 <translate> Give some stream of consciousness and then the answer. Jimmy and his friends get Dave drunk at a local bar. When Dave leaves the bar, the men follow him out. Jimmy tells Dave that he shot "Just Ray" Harris at that same location for ratting him out and sending him to jail. Jimmy informs Dave that his wife thinks he murdered Katie and tells Dave he will let him live if he confesses. Dave repeatedly tells Jimmy that he did kill someone but it was not Katie: he beat a child molester to death after finding him having sex with a child prostitute in a car. Jimmy does not believe Dave's claim and threatens him with a knife. When Dave finally admits to killing Katie thinking he can escape with his life, Jimmy kills him and disposes of his body in the adjacent Mystic River.

Based on this passage, who killed katie in the movie mystic river? <hau> Ka ba da wani rafi na sani sannan kuma amsar. Jimmy da abokansa sun sa Dave ya bugu a wani mashaya. Lokacin da Dave ya bar mashaya, mutanen sun bi shi. Jimmy ya gaya wa Dave cewa ya harbe "Just Ray" Harris a wannan wuri don ya ba da shi kuma ya tura shi kurkuku. Jimmy ya sanar da Dave cewa matarsa tana tunanin ya kashe Katie kuma ya gaya wa Dave zai bar shi ya rayu idan ya furta. Dave ya gaya wa Jimmy sau da yawa cewa ya kashe wani amma ba Katie ba ne: ya doke wani mai cin zarafin yara har ya mutu bayan ya same shi yana yin jima'i da yarinya karuwa a cikin mota. Jimmy bai yarda da da'awar Dave ba kuma ya yi masa barazanar wuka. Lokacin da Dave ya yarda da kashe Katie yana tunanin zai iya tserewa da ransa, Jimmy ya kashe shi kuma ya watsar da jikinsa a cikin Kogin Mystic da ke kusa.  Bisa ga wannan nassi, wanene ya kashe Katie a fim din Mystic River? 