A (bomb attack) can be on a (school bus).Logical formLearned from24 sentences. A bus may appear.Logical formLearned from24 sentences. A (suicide bomb attack) can be on a bus.Logical formLearned from24 sentences. Buses can be famous.Logical formLearned from24 sentences. A bus may carry families.Logical formLearned from24 sentences. A (roadside bomb) may rip through a bus.Logical formLearned from24 sentences. A public bus can be in a world-city.Logical formLearned from24 sentences. A (bus operator) may pertain-to a country.Logical formLearned from24 sentences. Buses may travel.Logical formLearned from24 sentences. A (suicide bomb) may rip through a bus.Logical formLearned from24 sentences. A bus may be set on fire.Logical formLearned from24 sentences. A bus can be in a heart of a world-city.Logical formLearned from24 sentences. Some gunmen may hijack a bus.Logical formLearned from23 sentences. A (suicide bombing attack) can be on a bus.Logical formLearned from23 sentences. A (bus trip) can be to a world-city.Logical formLearned from23 sentences.