蒙特利尔发生“噩梦”枪击事件，造成三人死亡，其中包括警察和旁观者 - 《卫报》

‘Nightmare’ shooting in Montreal leaves three dead including police officer and bystander - The Guardian

‘Nightmare’ shooting in Montreal leaves three dead including police officer and bystander The Guardian Gunman kills a Montreal officer at a Hilton hotel before being shot dead, police say WCAX Manifesto laden with incel ideology linked to Côte-des-Neiges shooting Montreal Gazette Are more police officers getting killed in the line of duty? Here's what the data tells us CBC Officer among 2 killed in a Montreal shooting that sources say appeared to target police CNN

这条新闻具备可验证事件线索，可继续观察是否形成 Yes/No 预测问题。

同主题新闻会帮助 Google 识别事件簇，也让用户继续进入可交易话题。