A bomb may go_off on a month.Logical formLearned from4 sentences. A bomb may go_off in a (commuter train).Logical formLearned from4 sentences. A (security system) may go_off.Logical formLearned from4 sentences. A bomb may go_off in a distance.Logical formLearned from4 sentences. An alarm may go_off in a (cargo hold).Logical formLearned from4 sentences. A bomb may go_off in a hotel.Logical formLearned from4 sentences. A string of bombs may go_off.Logical formLearned from4 sentences. Presidential elections may go_off without violence.Logical formLearned from4 sentences. A carbomb may go_off.Logical formLearned from4 sentences. A bomb may go_off at a time.Logical formLearned from4 sentences. A (gas cylinder) may go_off.Logical formLearned from4 sentences. Grenades may go_off in districts.Logical formLearned from4 sentences. Rounds may go_off seconds.Logical formLearned from4 sentences. An event may go_off without incident.Logical formLearned from4 sentences. A bomb may go_off at crossroads.Logical formLearned from4 sentences.