A bus may plunge_off a (mountain road).Logical formLearned from13 sentences. Some men may board a bus.Logical formLearned from13 sentences. Some convoys can be constituted-of-or-filled-with buses.Logical formLearned from13 sentences. Stops can be on a series of (bus tours).Logical formLearned from13 sentences. Men may stop a bus.Logical formLearned from13 sentences. A driver may pertain-to a (team bus).Logical formLearned from13 sentences. A bomb can be on a public bus.Logical formLearned from13 sentences. A (car bomb) may strike a bus.Logical formLearned from13 sentences. A bus may roll_down a gorge.Logical formLearned from13 sentences. Some (bus accidents) can be in a country.Logical formLearned from13 sentences. An arrest may trigger a boycott of a (bus system).Logical formLearned from13 sentences. A bus may travel from a world-city.Logical formLearned from13 sentences. Persons may board some bus.Logical formLearned from13 sentences. A bus may be hited by a train.Logical formLearned from13 sentences. An anti-tank missile may tear through a bus.Logical formLearned from13 sentences.