A blast may go_off at a (volleyball court).Logical formLearned from8 sentences. An alert may go_off.Logical formLearned from8 sentences. A motorcycle may go_off.Logical formLearned from8 sentences. Some dirty bombs may go_off.Logical formLearned from8 sentences. A rpg may go_off.Logical formLearned from8 sentences. Detonators may go_off.Logical formLearned from8 sentences. A bomb may go_off around some p.m..Logical formLearned from8 sentences. A (car bomb) may go_off among (auto repair shops).Logical formLearned from8 sentences. Some bombs may go_off at a same time.Logical formLearned from8 sentences. A bomb may go_off by accident.Logical formLearned from8 sentences. (State television) may go_off air.Logical formLearned from8 sentences. (Air raid sirens) may go_off at a capital.Logical formLearned from8 sentences. A bomb may go_off in a high school.Logical formLearned from8 sentences. First shots may go_off.Logical formLearned from8 sentences. An explosion may go_off after some p.m..Logical formLearned from8 sentences.