Parents may travel.Logical formLearned from59 sentences. Persons may travel by air.Logical formLearned from59 sentences. A truck may travel.Logical formLearned from59 sentences. A mile may be travelled.Logical formLearned from59 sentences. A male may travel throughout a country.Logical formLearned from59 sentences. A person may travel in a car.Logical formLearned from59 sentences. A band may travel to a US-city.Logical formLearned from58 sentences. A male may travel for some years.Logical formLearned from58 sentences. A male may travel across a continent.Logical formLearned from58 sentences. A person may travel a distance.Logical formLearned from58 sentences. A male may travel to a male.Logical formLearned from58 sentences. Motorists may travel.Logical formLearned from58 sentences. Vehicle-miles may be travelled.Logical formLearned from57 sentences. Persons may travel to a world-city.Logical formLearned from57 sentences. A ball may travel.Logical formLearned from57 sentences.