Electronic equipment may undergo maintenance.Logical formLearned from13 sentences. A (maintenance agreement) can be annual.Logical formLearned from13 sentences. A plan can be for maintenance.Logical formLearned from13 sentences. (Maintenance services) can be regular.Logical formLearned from13 sentences. Maintenance can be expected.Logical formLearned from13 sentences. An (air force maintenance) may pertain-to a country.Logical formLearned from13 sentences. A (service tunnel) may be used for maintenance.Logical formLearned from13 sentences. Maintenance can be unexpected.Logical formLearned from13 sentences. Demand can be for maintenance.Logical formLearned from13 sentences. A (maintenance period) can be seasonal.Logical formLearned from13 sentences. Maintenance can be court-ordered.Logical formLearned from13 sentences. Persons may have maintenance.Logical formLearned from13 sentences. Bilateral relations may undergo maintenance.Logical formLearned from13 sentences. Electrical equipment may undergo maintenance.Logical formLearned from13 sentences. National sovereignty may undergo maintenance.Logical formLearned from12 sentences.