(Police officers) may undergo killings.Logical formLearned from37 sentences. An increase can be in killings.Logical formLearned from37 sentences. An explanation can be for killings.Logical formLearned from37 sentences. Motives can be for a killing.Logical formLearned from37 sentences. Killings can be in a us-state.Logical formLearned from37 sentences. A cycle can be constituted-of-or-filled-with (revenge killings).Logical formLearned from37 sentences. Retaliation can be for a killing of some soldiers.Logical formLearned from37 sentences. A (mass killing) can be alleged.Logical formLearned from37 sentences. A figure may undergo a killing.Logical formLearned from37 sentences. A complexity may pertain-to a killing.Logical formLearned from37 sentences. Killing can be wrong.Logical formLearned from37 sentences. Ethnic albanians may undergo killings.Logical formLearned from37 sentences. A person may carry_out killings.Logical formLearned from37 sentences. Killings may increase.Logical formLearned from37 sentences. Killings can be in a country.Logical formLearned from37 sentences.