A bomb may go_off in a (garbage bin).Logical formLearned from5 sentences. Explosions may go_off a month.Logical formLearned from5 sentences. Some (roadside bombs) may go_off within minutes.Logical formLearned from5 sentences. A blast may go_off around some pm.Logical formLearned from5 sentences. A bomb may go_off in transit.Logical formLearned from5 sentences. A bomb may go_off in a cafeteria.Logical formLearned from5 sentences. A (letter bomb) may go_off.Logical formLearned from5 sentences. Some explosions may go_off around a (school building).Logical formLearned from5 sentences. A (car bomb) may go_off at some (housing complex).Logical formLearned from5 sentences. A protest may go_off without incident.Logical formLearned from5 sentences. Tests may go_off.Logical formLearned from5 sentences. A bomb may go_off under a seat.Logical formLearned from5 sentences. Some homemade bombs may go_off in cafeterias.Logical formLearned from5 sentences. (Air raid sirens) may go_off in a capital.Logical formLearned from5 sentences. A country may go_off on (bombing raids).Logical formLearned from5 sentences.