A no-fly zone can be extended.Logical formLearned from53 sentences. Zones can be experimental.Logical formLearned from52 sentences. A zone can be archeological.Logical formLearned from52 sentences. Zones can be effective.Logical formLearned from52 sentences. Zones can be mountainous.Logical formLearned from52 sentences. Some zones can be in a country.Logical formLearned from52 sentences. A zone can be specified.Logical formLearned from52 sentences. A zone can be a zone.Logical formLearned from51 sentences. A zone can be in a world-city.Logical formLearned from51 sentences. A hospital can be in a (war zone).Logical formLearned from51 sentences. A situation can be in a (conflict zone).Logical formLearned from51 sentences. A zone can be diplomatic.Logical formLearned from51 sentences. A zone can be sterile.Logical formLearned from50 sentences. A (buffer zone) can be in a country.Logical formLearned from50 sentences. A zone can be ventricular.Logical formLearned from50 sentences.