An ambush can be on a bus.Logical formLearned from19 sentences. A bus can be in district.Logical formLearned from19 sentences. A bus may fall into a river.Logical formLearned from18 sentences. A bus can be mobile.Logical formLearned from18 sentences. A path may pertain-to a bus.Logical formLearned from18 sentences. Bus may be attached to (traction poles).Logical formLearned from18 sentences. A bus can be unmarked.Logical formLearned from18 sentences. A bus can be horse-drawn.Logical formLearned from18 sentences. A bus may cross tracks.Logical formLearned from18 sentences. A network can be constituted-of-or-filled-with (bus services).Logical formLearned from18 sentences. Buses may depart some minutes.Logical formLearned from18 sentences. Buses can be dedicated.Logical formLearned from18 sentences. Buses can be in use.Logical formLearned from18 sentences. (Bus services) can be improved.Logical formLearned from18 sentences. A public may see a (bus service).Logical formLearned from18 sentences.