Some sets can be constituted-of-or-filled-with (bomb attacks).Logical formLearned from20 sentences. Bombs may be built.Logical formLearned from20 sentences. Perpetrators may pertain-to a (bomb attack).Logical formLearned from20 sentences. Retaliation can be for a (suicide bomb attack).Logical formLearned from20 sentences. Some persons may be killed in a (car bomb blast).Logical formLearned from20 sentences. A bomb can be in a bus.Logical formLearned from20 sentences. (Bomb attacks) can be regular.Logical formLearned from20 sentences. A bomb may explode at a (bus station).Logical formLearned from20 sentences. A (car bomb explosion) may pertain-to a weekday.Logical formLearned from20 sentences. Threats can be constituted-of-or-filled-with (bomb attacks).Logical formLearned from19 sentences. Involvement can be in (bomb attacks).Logical formLearned from19 sentences. An attack can be (roadside bomb).Logical formLearned from19 sentences. A (roadside bomb) may be organised by militants.Logical formLearned from19 sentences. A bomb may be attached to a motorbike.Logical formLearned from19 sentences. A bomb may be attached to a vehicle.Logical formLearned from19 sentences.