A (suicide car bomb) may go_off at an (army checkpoint).Logical formLearned from3 sentences. Some (explosion charges) may go_off.Logical formLearned from3 sentences. Persons may go_off to a start.Logical formLearned from3 sentences. Some (roadside bombs) may go_off in a morning.Logical formLearned from3 sentences. A vehicle may go_off a highway.Logical formLearned from3 sentences. A (passenger plane) may go_off a runway.Logical formLearned from3 sentences. A (roadside bomb) may go_off at a commercial area.Logical formLearned from3 sentences. An explosive charge may go_off at a market.Logical formLearned from3 sentences. Some explosive charges may go_off in succession.Logical formLearned from3 sentences. A (roadside bomb) may go_off in a market.Logical formLearned from3 sentences. An explosion may go_off in an elevator.Logical formLearned from3 sentences. A landmine may go_off at headquarters of district.Logical formLearned from3 sentences. Some others may go_off in a market.Logical formLearned from3 sentences. A world-city may go_off in a market.Logical formLearned from3 sentences. A (car parking) may go_off.Logical formLearned from3 sentences.