A (car bomb) may explode at a checkpoint.Logical formLearned from40 sentences. An impact may pertain-to a bomb.Logical formLearned from40 sentences. A bomb may be triggered.Logical formLearned from40 sentences. A material can be for atomic bombs.Logical formLearned from40 sentences. A bomb may be left.Logical formLearned from40 sentences. A bomb can be on a motorcycle.Logical formLearned from40 sentences. Police may defuse a (car bomb).Logical formLearned from40 sentences. A man may carry a bomb.Logical formLearned from40 sentences. Some (car bombs) may rock a world-city.Logical formLearned from40 sentences. A bomb may explode at a (bus stop).Logical formLearned from40 sentences. A patrol may be struck by a (roadside bomb).Logical formLearned from40 sentences. A bomb may explode on a bridge.Logical formLearned from40 sentences. A (car bomb attack) can be on an embassy.Logical formLearned from40 sentences. A (bomb blast) can be on a bus.Logical formLearned from40 sentences. Some (car bomb) may go_off.Logical formLearned from40 sentences.