A canister may go_off at an entrance of an (emergency ward) of a hospital.Logical formLearned from6 sentences. A (security alarm) may go_off.Logical formLearned from6 sentences. A gun may go_off some times.Logical formLearned from6 sentences. Strobes may go_off.Logical formLearned from6 sentences. Bombs may go_off in some trains.Logical formLearned from6 sentences. (Electricity blackouts) may prevent some sirens from go_offing.Logical formLearned from6 sentences. A (car bomb) may go_off about a kilometer.Logical formLearned from6 sentences. Bombs may go_off on subways.Logical formLearned from6 sentences. A round of bombs may go_off.Logical formLearned from6 sentences. A bomb may go_off during a (police chase).Logical formLearned from6 sentences. A male may go_off at some odds.Logical formLearned from6 sentences. A person may go_off into the world.Logical formLearned from6 sentences. Some ceremonies may go_off without protests.Logical formLearned from6 sentences. Some bombs may go_off (polling stations).Logical formLearned from6 sentences. A bomb may go_off by a humvee.Logical formLearned from6 sentences.