Travel can be in a world-city.Logical formLearned from41 sentences. (Air travel) may grow.Logical formLearned from41 sentences. Travel can be to a capital.Logical formLearned from41 sentences. (Travel restrictions) can be on officials.Logical formLearned from41 sentences. Persons can be subject to (travel restrictions).Logical formLearned from41 sentences. A (travel industry) may pertain-to a continent.Logical formLearned from41 sentences. Persons may advise against travel to a country.Logical formLearned from41 sentences. (Travel documents) can be international.Logical formLearned from40 sentences. Travel can be underwater.Logical formLearned from40 sentences. Travel may occur.Logical formLearned from40 sentences. A boom can be in (air travel).Logical formLearned from40 sentences. A part may pertain-to travel.Logical formLearned from40 sentences. A thriller can be about (time travel).Logical formLearned from40 sentences. A (travel mate) may pertain-to a person.Logical formLearned from40 sentences. Travel can be throughout the world.Logical formLearned from40 sentences.