(Security operations) can be in a world-city.Logical formLearned from56 sentences. Cooperation can be on (border security).Logical formLearned from56 sentences. Security can be vital.Logical formLearned from56 sentences. (Security forces) may continue.Logical formLearned from56 sentences. A minimum can be constituted-of-or-filled-with security.Logical formLearned from56 sentences. A (security pact) can be between a country.Logical formLearned from56 sentences. Trading can be in securities.Logical formLearned from55 sentences. A security may enforce functions.Logical formLearned from55 sentences. A (border security) can be improved.Logical formLearned from55 sentences. A market can be for securities.Logical formLearned from55 sentences. A level may pertain-to a security.Logical formLearned from55 sentences. A security may pertain-to forces.Logical formLearned from55 sentences. A (security clearance) can be high-level.Logical formLearned from55 sentences. (Security agents) can be diplomatic.Logical formLearned from55 sentences. A (security system) can be integrated.Logical formLearned from55 sentences.