(Transportation systems) can be advanced.Logical formLearned from30 sentences. Demand can be for (air transportation).Logical formLearned from30 sentences. Transportation can be in a country.Logical formLearned from30 sentences. Fuel can be for transportation.Logical formLearned from30 sentences. Transportation can be in a continent.Logical formLearned from30 sentences. A main source can be constituted-of-or-filled-with transportation.Logical formLearned from30 sentences. A lack can be constituted-of-or-filled-with public transportation.Logical formLearned from30 sentences. Ways can be constituted-of-or-filled-with transportation.Logical formLearned from30 sentences. Transportation can be efficient.Logical formLearned from30 sentences. A transportation can be refrigerated.Logical formLearned from29 sentences. Oil may undergo a transportation.Logical formLearned from29 sentences. Expenses can be for transportation.Logical formLearned from29 sentences. A person may rely on public transportation.Logical formLearned from29 sentences. Transportation can be to school.Logical formLearned from29 sentences. Modes can be constituted-of-or-filled-with public transportation.Logical formLearned from29 sentences.