A (stability pact) may pertain-to a zone.Logical formLearned from50 sentences. A country may recognize (air exclusion zones).Logical formLearned from49 sentences. Zones may undergo an establishment.Logical formLearned from49 sentences. A (convection zone) can be solar.Logical formLearned from49 sentences. A zone can be constituted-of-or-filled-with interest.Logical formLearned from49 sentences. A person may enter a zone.Logical formLearned from49 sentences. A zone can be clean.Logical formLearned from49 sentences. A zone can be personal.Logical formLearned from49 sentences. A country may patroll no-fly zones.Logical formLearned from49 sentences. (Buffer zones) may undergo a creation.Logical formLearned from49 sentences. A (security zone) may undergo an occupation.Logical formLearned from49 sentences. A part may pertain-to a (security zone).Logical formLearned from49 sentences. A (buffer zone) can be narrow.Logical formLearned from49 sentences. A free-trade zone can be in the world.Logical formLearned from48 sentences. Zones can be open.Logical formLearned from48 sentences.