Travel may be restricted.Logical formLearned from21 sentences. A (travel day) can be busy.Logical formLearned from21 sentences. Travel can be by airplane.Logical formLearned from21 sentences. Citizens can be against travel.Logical formLearned from21 sentences. (Travel advisories) may pertain-to a country.Logical formLearned from21 sentences. A country may lift a (travel ban) on a political-leader.Logical formLearned from21 sentences. Travel can be treacherous.Logical formLearned from21 sentences. (Travel office workers) may undergo firings.Logical formLearned from21 sentences. (Travel companies) may pertain-to a country.Logical formLearned from21 sentences. A (travel ban) may undergo a violation.Logical formLearned from21 sentences. Travel can be unimpeded.Logical formLearned from21 sentences. An (air travel shutdown) may pertain-to a continent.Logical formLearned from21 sentences. Travel can be between islands.Logical formLearned from21 sentences. A ban can be on travel to a continent.Logical formLearned from21 sentences. A proposal can be for a (travel ban).Logical formLearned from21 sentences.